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Finding the Fourth Proportional to 389,373.12, 584,060.88 and 108,892.80

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Solution

The fourth proportional to 389,373.12, 584,060.88 and 108,892.80 is: 163,339.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,373.12 : 584,060.88 = 108,892.80 : x
  2. Step 2: Convert to fraction form
    389,373.12/584,060.88 = 108,892.80/x
  3. Step 3: Cross multiply
    389,373.12x = 584,060.88 × 108,892.80
  4. Step 4: Simplify right side
    389,373.12x = 63,600,024,593.66
  5. Step 5: Solve for x
    x = 63,600,024,593.66/389,373.12
  6. Step 6: Final answer
    x = 163,339.54

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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.