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Finding the Fourth Proportional to 486,352.80, 729,529.20 and 131,402.70

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Solution

The fourth proportional to 486,352.80, 729,529.20 and 131,402.70 is: 197,104.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,352.80 : 729,529.20 = 131,402.70 : x
  2. Step 2: Convert to fraction form
    486,352.80/729,529.20 = 131,402.70/x
  3. Step 3: Cross multiply
    486,352.80x = 729,529.20 × 131,402.70
  4. Step 4: Simplify right side
    486,352.80x = 95,862,106,608.84
  5. Step 5: Solve for x
    x = 95,862,106,608.84/486,352.80
  6. Step 6: Final answer
    x = 197,104.05

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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.