Home / 257,839.20-386,619.48-100,025.28

Finding the Fourth Proportional to 257,839.20, 386,619.48 and 100,025.28

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Solution

The fourth proportional to 257,839.20, 386,619.48 and 100,025.28 is: 149,983.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,839.20 : 386,619.48 = 100,025.28 : x
  2. Step 2: Convert to fraction form
    257,839.20/386,619.48 = 100,025.28/x
  3. Step 3: Cross multiply
    257,839.20x = 386,619.48 × 100,025.28
  4. Step 4: Simplify right side
    257,839.20x = 38,671,721,740.45
  5. Step 5: Solve for x
    x = 38,671,721,740.45/257,839.20
  6. Step 6: Final answer
    x = 149,983.87

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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.