Home / 486,191.85-729,287.79-131,205.30

Finding the Fourth Proportional to 486,191.85, 729,287.79 and 131,205.30

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Solution

The fourth proportional to 486,191.85, 729,287.79 and 131,205.30 is: 196,807.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,191.85 : 729,287.79 = 131,205.30 : x
  2. Step 2: Convert to fraction form
    486,191.85/729,287.79 = 131,205.30/x
  3. Step 3: Cross multiply
    486,191.85x = 729,287.79 × 131,205.30
  4. Step 4: Simplify right side
    486,191.85x = 95,686,423,273.29
  5. Step 5: Solve for x
    x = 95,686,423,273.29/486,191.85
  6. Step 6: Final answer
    x = 196,807.95

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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.