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Finding the Fourth Proportional to 207,305.72, 310,957.52 and 80,958.80

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Solution

The fourth proportional to 207,305.72, 310,957.52 and 80,958.80 is: 121,437.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,305.72 : 310,957.52 = 80,958.80 : x
  2. Step 2: Convert to fraction form
    207,305.72/310,957.52 = 80,958.80/x
  3. Step 3: Cross multiply
    207,305.72x = 310,957.52 × 80,958.80
  4. Step 4: Simplify right side
    207,305.72x = 25,174,746,115.39
  5. Step 5: Solve for x
    x = 25,174,746,115.39/207,305.72
  6. Step 6: Final answer
    x = 121,437.78

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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.