Home / 431,932.52-647,898.84-221,436.20

Finding the Fourth Proportional to 431,932.52, 647,898.84 and 221,436.20

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Solution

The fourth proportional to 431,932.52, 647,898.84 and 221,436.20 is: 332,154.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,932.52 : 647,898.84 = 221,436.20 : x
  2. Step 2: Convert to fraction form
    431,932.52/647,898.84 = 221,436.20/x
  3. Step 3: Cross multiply
    431,932.52x = 647,898.84 × 221,436.20
  4. Step 4: Simplify right side
    431,932.52x = 143,468,253,874.51
  5. Step 5: Solve for x
    x = 143,468,253,874.51/431,932.52
  6. Step 6: Final answer
    x = 332,154.33

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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.