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Finding the Fourth Proportional to 485,124.40, 728,032.20 and 204,842.80

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Solution

The fourth proportional to 485,124.40, 728,032.20 and 204,842.80 is: 307,410.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,124.40 : 728,032.20 = 204,842.80 : x
  2. Step 2: Convert to fraction form
    485,124.40/728,032.20 = 204,842.80/x
  3. Step 3: Cross multiply
    485,124.40x = 728,032.20 × 204,842.80
  4. Step 4: Simplify right side
    485,124.40x = 149,132,154,338.16
  5. Step 5: Solve for x
    x = 149,132,154,338.16/485,124.40
  6. Step 6: Final answer
    x = 307,410.13

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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.