Home / 429,049.17-643,124.66-144,641.43

Finding the Fourth Proportional to 429,049.17, 643,124.66 and 144,641.43

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Solution

The fourth proportional to 429,049.17, 643,124.66 and 144,641.43 is: 216,810.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,049.17 : 643,124.66 = 144,641.43 : x
  2. Step 2: Convert to fraction form
    429,049.17/643,124.66 = 144,641.43/x
  3. Step 3: Cross multiply
    429,049.17x = 643,124.66 × 144,641.43
  4. Step 4: Simplify right side
    429,049.17x = 93,022,469,767.46
  5. Step 5: Solve for x
    x = 93,022,469,767.46/429,049.17
  6. Step 6: Final answer
    x = 216,810.74

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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.