Home / 257,715.90-386,481.24-89,190.50

Finding the Fourth Proportional to 257,715.90, 386,481.24 and 89,190.50

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Solution

The fourth proportional to 257,715.90, 386,481.24 and 89,190.50 is: 133,753.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,715.90 : 386,481.24 = 89,190.50 : x
  2. Step 2: Convert to fraction form
    257,715.90/386,481.24 = 89,190.50/x
  3. Step 3: Cross multiply
    257,715.90x = 386,481.24 × 89,190.50
  4. Step 4: Simplify right side
    257,715.90x = 34,470,453,103.81
  5. Step 5: Solve for x
    x = 34,470,453,103.81/257,715.90
  6. Step 6: Final answer
    x = 133,753.69

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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.