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Finding the Fourth Proportional to 393,116.88, 588,789.28 and 275,314.13

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Solution

The fourth proportional to 393,116.88, 588,789.28 and 275,314.13 is: 412,350.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,116.88 : 588,789.28 = 275,314.13 : x
  2. Step 2: Convert to fraction form
    393,116.88/588,789.28 = 275,314.13/x
  3. Step 3: Cross multiply
    393,116.88x = 588,789.28 × 275,314.13
  4. Step 4: Simplify right side
    393,116.88x = 162,102,008,376.53
  5. Step 5: Solve for x
    x = 162,102,008,376.53/393,116.88
  6. Step 6: Final answer
    x = 412,350.67

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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.