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Finding the Fourth Proportional to 277,391.52, 382,705.20 and 156,517.92

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Solution

The fourth proportional to 277,391.52, 382,705.20 and 156,517.92 is: 215,941.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,391.52 : 382,705.20 = 156,517.92 : x
  2. Step 2: Convert to fraction form
    277,391.52/382,705.20 = 156,517.92/x
  3. Step 3: Cross multiply
    277,391.52x = 382,705.20 × 156,517.92
  4. Step 4: Simplify right side
    277,391.52x = 59,900,221,877.18
  5. Step 5: Solve for x
    x = 59,900,221,877.18/277,391.52
  6. Step 6: Final answer
    x = 215,941.07

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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.