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Finding the Fourth Proportional to 378,031.20, 567,046.80 and 141,324.90

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Solution

The fourth proportional to 378,031.20, 567,046.80 and 141,324.90 is: 211,987.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,031.20 : 567,046.80 = 141,324.90 : x
  2. Step 2: Convert to fraction form
    378,031.20/567,046.80 = 141,324.90/x
  3. Step 3: Cross multiply
    378,031.20x = 567,046.80 × 141,324.90
  4. Step 4: Simplify right side
    378,031.20x = 80,137,832,305.32
  5. Step 5: Solve for x
    x = 80,137,832,305.32/378,031.20
  6. Step 6: Final answer
    x = 211,987.35

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1.5x scale

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.