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Finding the Fourth Proportional to 485,841.02, 728,761.55 and 260,892.02

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Solution

The fourth proportional to 485,841.02, 728,761.55 and 260,892.02 is: 391,338.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,841.02 : 728,761.55 = 260,892.02 : x
  2. Step 2: Convert to fraction form
    485,841.02/728,761.55 = 260,892.02/x
  3. Step 3: Cross multiply
    485,841.02x = 728,761.55 × 260,892.02
  4. Step 4: Simplify right side
    485,841.02x = 190,128,072,877.83
  5. Step 5: Solve for x
    x = 190,128,072,877.83/485,841.02
  6. Step 6: Final answer
    x = 391,338.04

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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.