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Finding the Fourth Proportional to 274,927.40, 412,391.10 and 87,957.80

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Solution

The fourth proportional to 274,927.40, 412,391.10 and 87,957.80 is: 131,936.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,927.40 : 412,391.10 = 87,957.80 : x
  2. Step 2: Convert to fraction form
    274,927.40/412,391.10 = 87,957.80/x
  3. Step 3: Cross multiply
    274,927.40x = 412,391.10 × 87,957.80
  4. Step 4: Simplify right side
    274,927.40x = 36,273,013,895.58
  5. Step 5: Solve for x
    x = 36,273,013,895.58/274,927.40
  6. Step 6: Final answer
    x = 131,936.70

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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.