Home / 257,764.16-386,490.94-115,583.70

Finding the Fourth Proportional to 257,764.16, 386,490.94 and 115,583.70

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Solution

The fourth proportional to 257,764.16, 386,490.94 and 115,583.70 is: 173,305.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,764.16 : 386,490.94 = 115,583.70 : x
  2. Step 2: Convert to fraction form
    257,764.16/386,490.94 = 115,583.70/x
  3. Step 3: Cross multiply
    257,764.16x = 386,490.94 × 115,583.70
  4. Step 4: Simplify right side
    257,764.16x = 44,672,052,861.68
  5. Step 5: Solve for x
    x = 44,672,052,861.68/257,764.16
  6. Step 6: Final answer
    x = 173,305.91

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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.