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Finding the Fourth Proportional to 381,355.74, 571,851.77 and 141,304.95

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Solution

The fourth proportional to 381,355.74, 571,851.77 and 141,304.95 is: 211,890.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,355.74 : 571,851.77 = 141,304.95 : x
  2. Step 2: Convert to fraction form
    381,355.74/571,851.77 = 141,304.95/x
  3. Step 3: Cross multiply
    381,355.74x = 571,851.77 × 141,304.95
  4. Step 4: Simplify right side
    381,355.74x = 80,805,485,060.74
  5. Step 5: Solve for x
    x = 80,805,485,060.74/381,355.74
  6. Step 6: Final answer
    x = 211,890.05

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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.