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Finding the Fourth Proportional to 274,770.72, 379,179.36 and 153,916.32

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Solution

The fourth proportional to 274,770.72, 379,179.36 and 153,916.32 is: 212,402.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,770.72 : 379,179.36 = 153,916.32 : x
  2. Step 2: Convert to fraction form
    274,770.72/379,179.36 = 153,916.32/x
  3. Step 3: Cross multiply
    274,770.72x = 379,179.36 × 153,916.32
  4. Step 4: Simplify right side
    274,770.72x = 58,361,891,711.16
  5. Step 5: Solve for x
    x = 58,361,891,711.16/274,770.72
  6. Step 6: Final answer
    x = 212,402.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.