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Finding the Fourth Proportional to 663,636.70, 995,455.05 and 165,000.70

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Solution

The fourth proportional to 663,636.70, 995,455.05 and 165,000.70 is: 247,501.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,636.70 : 995,455.05 = 165,000.70 : x
  2. Step 2: Convert to fraction form
    663,636.70/995,455.05 = 165,000.70/x
  3. Step 3: Cross multiply
    663,636.70x = 995,455.05 × 165,000.70
  4. Step 4: Simplify right side
    663,636.70x = 164,250,780,068.54
  5. Step 5: Solve for x
    x = 164,250,780,068.54/663,636.70
  6. Step 6: Final answer
    x = 247,501.05

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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.