Home / 431,933.27-647,899.97-221,436.95

Finding the Fourth Proportional to 431,933.27, 647,899.97 and 221,436.95

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Solution

The fourth proportional to 431,933.27, 647,899.97 and 221,436.95 is: 332,155.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,933.27 : 647,899.97 = 221,436.95 : x
  2. Step 2: Convert to fraction form
    431,933.27/647,899.97 = 221,436.95/x
  3. Step 3: Cross multiply
    431,933.27x = 647,899.97 × 221,436.95
  4. Step 4: Simplify right side
    431,933.27x = 143,468,988,915.21
  5. Step 5: Solve for x
    x = 143,468,988,915.21/431,933.27
  6. Step 6: Final answer
    x = 332,155.45

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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.