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Finding the Fourth Proportional to 454,377.34, 681,688.72 and 138,825.64

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Solution

The fourth proportional to 454,377.34, 681,688.72 and 138,825.64 is: 208,275.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,377.34 : 681,688.72 = 138,825.64 : x
  2. Step 2: Convert to fraction form
    454,377.34/681,688.72 = 138,825.64/x
  3. Step 3: Cross multiply
    454,377.34x = 681,688.72 × 138,825.64
  4. Step 4: Simplify right side
    454,377.34x = 94,635,872,834.78
  5. Step 5: Solve for x
    x = 94,635,872,834.78/454,377.34
  6. Step 6: Final answer
    x = 208,275.95

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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.