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Finding the Fourth Proportional to 454,404.18, 681,607.88 and 138,859.76

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Solution

The fourth proportional to 454,404.18, 681,607.88 and 138,859.76 is: 208,290.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,404.18 : 681,607.88 = 138,859.76 : x
  2. Step 2: Convert to fraction form
    454,404.18/681,607.88 = 138,859.76/x
  3. Step 3: Cross multiply
    454,404.18x = 681,607.88 × 138,859.76
  4. Step 4: Simplify right side
    454,404.18x = 94,647,906,630.91
  5. Step 5: Solve for x
    x = 94,647,906,630.91/454,404.18
  6. Step 6: Final answer
    x = 208,290.13

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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.