Home / 431,934.02-647,901.10-221,437.70

Finding the Fourth Proportional to 431,934.02, 647,901.10 and 221,437.70

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Solution

The fourth proportional to 431,934.02, 647,901.10 and 221,437.70 is: 332,156.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,934.02 : 647,901.10 = 221,437.70 : x
  2. Step 2: Convert to fraction form
    431,934.02/647,901.10 = 221,437.70/x
  3. Step 3: Cross multiply
    431,934.02x = 647,901.10 × 221,437.70
  4. Step 4: Simplify right side
    431,934.02x = 143,469,729,411.47
  5. Step 5: Solve for x
    x = 143,469,729,411.47/431,934.02
  6. Step 6: Final answer
    x = 332,156.59

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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.