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Finding the Fourth Proportional to 378,342.32, 567,513.48 and 129,026.48

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Solution

The fourth proportional to 378,342.32, 567,513.48 and 129,026.48 is: 193,539.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,342.32 : 567,513.48 = 129,026.48 : x
  2. Step 2: Convert to fraction form
    378,342.32/567,513.48 = 129,026.48/x
  3. Step 3: Cross multiply
    378,342.32x = 567,513.48 × 129,026.48
  4. Step 4: Simplify right side
    378,342.32x = 73,224,266,676.95
  5. Step 5: Solve for x
    x = 73,224,266,676.95/378,342.32
  6. Step 6: Final answer
    x = 193,539.72

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Similar ratio
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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.