Home / 257,531.24-386,345.30-103,668.98

Finding the Fourth Proportional to 257,531.24, 386,345.30 and 103,668.98

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Solution

The fourth proportional to 257,531.24, 386,345.30 and 103,668.98 is: 155,522.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,531.24 : 386,345.30 = 103,668.98 : x
  2. Step 2: Convert to fraction form
    257,531.24/386,345.30 = 103,668.98/x
  3. Step 3: Cross multiply
    257,531.24x = 386,345.30 × 103,668.98
  4. Step 4: Simplify right side
    257,531.24x = 40,052,023,178.79
  5. Step 5: Solve for x
    x = 40,052,023,178.79/257,531.24
  6. Step 6: Final answer
    x = 155,522.97

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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.