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Finding the Fourth Proportional to 485,360.92, 728,043 and 148,400.29

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Solution

The fourth proportional to 485,360.92, 728,043 and 148,400.29 is: 222,600.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,360.92 : 728,043 = 148,400.29 : x
  2. Step 2: Convert to fraction form
    485,360.92/728,043 = 148,400.29/x
  3. Step 3: Cross multiply
    485,360.92x = 728,043 × 148,400.29
  4. Step 4: Simplify right side
    485,360.92x = 108,041,792,332.47
  5. Step 5: Solve for x
    x = 108,041,792,332.47/485,360.92
  6. Step 6: Final answer
    x = 222,600.93

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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.