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Finding the Fourth Proportional to 378,052.80, 567,079.20 and 141,382.95

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Solution

The fourth proportional to 378,052.80, 567,079.20 and 141,382.95 is: 212,074.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,052.80 : 567,079.20 = 141,382.95 : x
  2. Step 2: Convert to fraction form
    378,052.80/567,079.20 = 141,382.95/x
  3. Step 3: Cross multiply
    378,052.80x = 567,079.20 × 141,382.95
  4. Step 4: Simplify right side
    378,052.80x = 80,175,330,179.64
  5. Step 5: Solve for x
    x = 80,175,330,179.64/378,052.80
  6. Step 6: Final answer
    x = 212,074.43

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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.