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Finding the Fourth Proportional to 269,211.70, 403,331.55 and 156,799.90

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Solution

The fourth proportional to 269,211.70, 403,331.55 and 156,799.90 is: 234,916.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,211.70 : 403,331.55 = 156,799.90 : x
  2. Step 2: Convert to fraction form
    269,211.70/403,331.55 = 156,799.90/x
  3. Step 3: Cross multiply
    269,211.70x = 403,331.55 × 156,799.90
  4. Step 4: Simplify right side
    269,211.70x = 63,242,346,706.85
  5. Step 5: Solve for x
    x = 63,242,346,706.85/269,211.70
  6. Step 6: Final answer
    x = 234,916.78

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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.