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Finding the Fourth Proportional to 338,757.50, 508,170.28 and 89,439.50

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Solution

The fourth proportional to 338,757.50, 508,170.28 and 89,439.50 is: 134,168.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,757.50 : 508,170.28 = 89,439.50 : x
  2. Step 2: Convert to fraction form
    338,757.50/508,170.28 = 89,439.50/x
  3. Step 3: Cross multiply
    338,757.50x = 508,170.28 × 89,439.50
  4. Step 4: Simplify right side
    338,757.50x = 45,450,495,758.06
  5. Step 5: Solve for x
    x = 45,450,495,758.06/338,757.50
  6. Step 6: Final answer
    x = 134,168.23

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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.