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Finding the Fourth Proportional to 454,244.40, 681,366.60 and 138,700.80

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Solution

The fourth proportional to 454,244.40, 681,366.60 and 138,700.80 is: 208,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,244.40 : 681,366.60 = 138,700.80 : x
  2. Step 2: Convert to fraction form
    454,244.40/681,366.60 = 138,700.80/x
  3. Step 3: Cross multiply
    454,244.40x = 681,366.60 × 138,700.80
  4. Step 4: Simplify right side
    454,244.40x = 94,506,092,513.28
  5. Step 5: Solve for x
    x = 94,506,092,513.28/454,244.40
  6. Step 6: Final answer
    x = 208,051.20

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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.