Home / 398,869.26-598,309.13-132,629.79

Finding the Fourth Proportional to 398,869.26, 598,309.13 and 132,629.79

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Solution

The fourth proportional to 398,869.26, 598,309.13 and 132,629.79 is: 198,946.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,869.26 : 598,309.13 = 132,629.79 : x
  2. Step 2: Convert to fraction form
    398,869.26/598,309.13 = 132,629.79/x
  3. Step 3: Cross multiply
    398,869.26x = 598,309.13 × 132,629.79
  4. Step 4: Simplify right side
    398,869.26x = 79,353,614,266.98
  5. Step 5: Solve for x
    x = 79,353,614,266.98/398,869.26
  6. Step 6: Final answer
    x = 198,946.43

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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.