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Finding the Fourth Proportional to 207,347.16, 311,005.92 and 80,963.73

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Solution

The fourth proportional to 207,347.16, 311,005.92 and 80,963.73 is: 121,439.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,347.16 : 311,005.92 = 80,963.73 : x
  2. Step 2: Convert to fraction form
    207,347.16/311,005.92 = 80,963.73/x
  3. Step 3: Cross multiply
    207,347.16x = 311,005.92 × 80,963.73
  4. Step 4: Simplify right side
    207,347.16x = 25,180,199,335.28
  5. Step 5: Solve for x
    x = 25,180,199,335.28/207,347.16
  6. Step 6: Final answer
    x = 121,439.81

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1.5x scale

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.