Home / 257,720.65-386,488.35-89,195.26

Finding the Fourth Proportional to 257,720.65, 386,488.35 and 89,195.26

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Solution

The fourth proportional to 257,720.65, 386,488.35 and 89,195.26 is: 133,760.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,720.65 : 386,488.35 = 89,195.26 : x
  2. Step 2: Convert to fraction form
    257,720.65/386,488.35 = 89,195.26/x
  3. Step 3: Cross multiply
    257,720.65x = 386,488.35 × 89,195.26
  4. Step 4: Simplify right side
    257,720.65x = 34,472,928,865.22
  5. Step 5: Solve for x
    x = 34,472,928,865.22/257,720.65
  6. Step 6: Final answer
    x = 133,760.83

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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.