Home / 257,961.90-386,947.41-89,488.18

Finding the Fourth Proportional to 257,961.90, 386,947.41 and 89,488.18

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Solution

The fourth proportional to 257,961.90, 386,947.41 and 89,488.18 is: 134,233.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,961.90 : 386,947.41 = 89,488.18 : x
  2. Step 2: Convert to fraction form
    257,961.90/386,947.41 = 89,488.18/x
  3. Step 3: Cross multiply
    257,961.90x = 386,947.41 × 89,488.18
  4. Step 4: Simplify right side
    257,961.90x = 34,627,219,476.61
  5. Step 5: Solve for x
    x = 34,627,219,476.61/257,961.90
  6. Step 6: Final answer
    x = 134,233.85

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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.