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Finding the Fourth Proportional to 238,687.97, 357,958.85 and 78,734.43

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Solution

The fourth proportional to 238,687.97, 357,958.85 and 78,734.43 is: 118,077.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,687.97 : 357,958.85 = 78,734.43 : x
  2. Step 2: Convert to fraction form
    238,687.97/357,958.85 = 78,734.43/x
  3. Step 3: Cross multiply
    238,687.97x = 357,958.85 × 78,734.43
  4. Step 4: Simplify right side
    238,687.97x = 28,183,685,624.53
  5. Step 5: Solve for x
    x = 28,183,685,624.53/238,687.97
  6. Step 6: Final answer
    x = 118,077.53

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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.