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Finding the Fourth Proportional to 393,187.59, 542,581.00 and 240,481.53

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Solution

The fourth proportional to 393,187.59, 542,581.00 and 240,481.53 is: 331,853.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,187.59 : 542,581.00 = 240,481.53 : x
  2. Step 2: Convert to fraction form
    393,187.59/542,581.00 = 240,481.53/x
  3. Step 3: Cross multiply
    393,187.59x = 542,581.00 × 240,481.53
  4. Step 4: Simplify right side
    393,187.59x = 130,480,708,427.73
  5. Step 5: Solve for x
    x = 130,480,708,427.73/393,187.59
  6. Step 6: Final answer
    x = 331,853.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.