Home / 485,143.80-727,793.40-204,702.36

Finding the Fourth Proportional to 485,143.80, 727,793.40 and 204,702.36

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Solution

The fourth proportional to 485,143.80, 727,793.40 and 204,702.36 is: 307,086.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,143.80 : 727,793.40 = 204,702.36 : x
  2. Step 2: Convert to fraction form
    485,143.80/727,793.40 = 204,702.36/x
  3. Step 3: Cross multiply
    485,143.80x = 727,793.40 × 204,702.36
  4. Step 4: Simplify right side
    485,143.80x = 148,981,026,572.42
  5. Step 5: Solve for x
    x = 148,981,026,572.42/485,143.80
  6. Step 6: Final answer
    x = 307,086.32

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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.