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Finding the Fourth Proportional to 338,708.62, 508,096.95 and 89,390.62

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Solution

The fourth proportional to 338,708.62, 508,096.95 and 89,390.62 is: 134,094.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,708.62 : 508,096.95 = 89,390.62 : x
  2. Step 2: Convert to fraction form
    338,708.62/508,096.95 = 89,390.62/x
  3. Step 3: Cross multiply
    338,708.62x = 508,096.95 × 89,390.62
  4. Step 4: Simplify right side
    338,708.62x = 45,419,101,380.61
  5. Step 5: Solve for x
    x = 45,419,101,380.61/338,708.62
  6. Step 6: Final answer
    x = 134,094.91

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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.