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Finding the Fourth Proportional to 206,960.20, 310,440.30 and 187,277.20

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Solution

The fourth proportional to 206,960.20, 310,440.30 and 187,277.20 is: 280,915.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,960.20 : 310,440.30 = 187,277.20 : x
  2. Step 2: Convert to fraction form
    206,960.20/310,440.30 = 187,277.20/x
  3. Step 3: Cross multiply
    206,960.20x = 310,440.30 × 187,277.20
  4. Step 4: Simplify right side
    206,960.20x = 58,138,390,151.16
  5. Step 5: Solve for x
    x = 58,138,390,151.16/206,960.20
  6. Step 6: Final answer
    x = 280,915.80

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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.