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Finding the Fourth Proportional to 543,992.40, 815,988.60 and 170,015.40

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Solution

The fourth proportional to 543,992.40, 815,988.60 and 170,015.40 is: 255,023.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,992.40 : 815,988.60 = 170,015.40 : x
  2. Step 2: Convert to fraction form
    543,992.40/815,988.60 = 170,015.40/x
  3. Step 3: Cross multiply
    543,992.40x = 815,988.60 × 170,015.40
  4. Step 4: Simplify right side
    543,992.40x = 138,730,628,224.44
  5. Step 5: Solve for x
    x = 138,730,628,224.44/543,992.40
  6. Step 6: Final answer
    x = 255,023.10

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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.