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Finding the Fourth Proportional to 485,711.38, 728,125.98 and 169,996.06

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Solution

The fourth proportional to 485,711.38, 728,125.98 and 169,996.06 is: 254,839.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,711.38 : 728,125.98 = 169,996.06 : x
  2. Step 2: Convert to fraction form
    485,711.38/728,125.98 = 169,996.06/x
  3. Step 3: Cross multiply
    485,711.38x = 728,125.98 × 169,996.06
  4. Step 4: Simplify right side
    485,711.38x = 123,778,547,783.64
  5. Step 5: Solve for x
    x = 123,778,547,783.64/485,711.38
  6. Step 6: Final answer
    x = 254,839.71

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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.