Home / 454,204.80-681,307.20-138,620.70

Finding the Fourth Proportional to 454,204.80, 681,307.20 and 138,620.70

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Solution

The fourth proportional to 454,204.80, 681,307.20 and 138,620.70 is: 207,931.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,204.80 : 681,307.20 = 138,620.70 : x
  2. Step 2: Convert to fraction form
    454,204.80/681,307.20 = 138,620.70/x
  3. Step 3: Cross multiply
    454,204.80x = 681,307.20 × 138,620.70
  4. Step 4: Simplify right side
    454,204.80x = 94,443,280,979.04
  5. Step 5: Solve for x
    x = 94,443,280,979.04/454,204.80
  6. Step 6: Final answer
    x = 207,931.05

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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.