Home / 257,764.16-386,490.92-115,583.72

Finding the Fourth Proportional to 257,764.16, 386,490.92 and 115,583.72

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Solution

The fourth proportional to 257,764.16, 386,490.92 and 115,583.72 is: 173,305.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,764.16 : 386,490.92 = 115,583.72 : x
  2. Step 2: Convert to fraction form
    257,764.16/386,490.92 = 115,583.72/x
  3. Step 3: Cross multiply
    257,764.16x = 386,490.92 × 115,583.72
  4. Step 4: Simplify right side
    257,764.16x = 44,672,058,279.82
  5. Step 5: Solve for x
    x = 44,672,058,279.82/257,764.16
  6. Step 6: Final answer
    x = 173,305.93

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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.