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Finding the Fourth Proportional to 472,380.28, 708,357.20 and 135,343.80

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Solution

The fourth proportional to 472,380.28, 708,357.20 and 135,343.80 is: 202,954.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,380.28 : 708,357.20 = 135,343.80 : x
  2. Step 2: Convert to fraction form
    472,380.28/708,357.20 = 135,343.80/x
  3. Step 3: Cross multiply
    472,380.28x = 708,357.20 × 135,343.80
  4. Step 4: Simplify right side
    472,380.28x = 95,871,755,205.36
  5. Step 5: Solve for x
    x = 95,871,755,205.36/472,380.28
  6. Step 6: Final answer
    x = 202,954.61

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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.