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Finding the Fourth Proportional to 338,842.28, 508,281.66 and 89,517.48

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Solution

The fourth proportional to 338,842.28, 508,281.66 and 89,517.48 is: 134,281.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,842.28 : 508,281.66 = 89,517.48 : x
  2. Step 2: Convert to fraction form
    338,842.28/508,281.66 = 89,517.48/x
  3. Step 3: Cross multiply
    338,842.28x = 508,281.66 × 89,517.48
  4. Step 4: Simplify right side
    338,842.28x = 45,500,093,333.42
  5. Step 5: Solve for x
    x = 45,500,093,333.42/338,842.28
  6. Step 6: Final answer
    x = 134,281.04

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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.