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Finding the Fourth Proportional to 485,411.48, 728,445.12 and 169,871.12

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Solution

The fourth proportional to 485,411.48, 728,445.12 and 169,871.12 is: 254,921.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,411.48 : 728,445.12 = 169,871.12 : x
  2. Step 2: Convert to fraction form
    485,411.48/728,445.12 = 169,871.12/x
  3. Step 3: Cross multiply
    485,411.48x = 728,445.12 × 169,871.12
  4. Step 4: Simplify right side
    485,411.48x = 123,741,788,392.93
  5. Step 5: Solve for x
    x = 123,741,788,392.93/485,411.48
  6. Step 6: Final answer
    x = 254,921.43

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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.