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Finding the Fourth Proportional to 663,645.40, 995,468.10 and 165,009.40

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Solution

The fourth proportional to 663,645.40, 995,468.10 and 165,009.40 is: 247,514.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,645.40 : 995,468.10 = 165,009.40 : x
  2. Step 2: Convert to fraction form
    663,645.40/995,468.10 = 165,009.40/x
  3. Step 3: Cross multiply
    663,645.40x = 995,468.10 × 165,009.40
  4. Step 4: Simplify right side
    663,645.40x = 164,261,593,900.14
  5. Step 5: Solve for x
    x = 164,261,593,900.14/663,645.40
  6. Step 6: Final answer
    x = 247,514.10

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.