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Finding the Fourth Proportional to 279,178.59, 418,806.51 and 89,594.31

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Solution

The fourth proportional to 279,178.59, 418,806.51 and 89,594.31 is: 134,403.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,178.59 : 418,806.51 = 89,594.31 : x
  2. Step 2: Convert to fraction form
    279,178.59/418,806.51 = 89,594.31/x
  3. Step 3: Cross multiply
    279,178.59x = 418,806.51 × 89,594.31
  4. Step 4: Simplify right side
    279,178.59x = 37,522,680,286.96
  5. Step 5: Solve for x
    x = 37,522,680,286.96/279,178.59
  6. Step 6: Final answer
    x = 134,403.86

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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.