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Finding the Fourth Proportional to 485,512.60, 728,487.60 and 232,695.40

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Solution

The fourth proportional to 485,512.60, 728,487.60 and 232,695.40 is: 349,147.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,512.60 : 728,487.60 = 232,695.40 : x
  2. Step 2: Convert to fraction form
    485,512.60/728,487.60 = 232,695.40/x
  3. Step 3: Cross multiply
    485,512.60x = 728,487.60 × 232,695.40
  4. Step 4: Simplify right side
    485,512.60x = 169,515,713,477.04
  5. Step 5: Solve for x
    x = 169,515,713,477.04/485,512.60
  6. Step 6: Final answer
    x = 349,147.92

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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.