Home / 431,934.27-647,901.47-221,437.95

Finding the Fourth Proportional to 431,934.27, 647,901.47 and 221,437.95

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Solution

The fourth proportional to 431,934.27, 647,901.47 and 221,437.95 is: 332,156.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,934.27 : 647,901.47 = 221,437.95 : x
  2. Step 2: Convert to fraction form
    431,934.27/647,901.47 = 221,437.95/x
  3. Step 3: Cross multiply
    431,934.27x = 647,901.47 × 221,437.95
  4. Step 4: Simplify right side
    431,934.27x = 143,469,973,318.79
  5. Step 5: Solve for x
    x = 143,469,973,318.79/431,934.27
  6. Step 6: Final answer
    x = 332,156.96

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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.