Home / 253,781.16-380,672.02-76,288.15

Finding the Fourth Proportional to 253,781.16, 380,672.02 and 76,288.15

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Solution

The fourth proportional to 253,781.16, 380,672.02 and 76,288.15 is: 114,432.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,781.16 : 380,672.02 = 76,288.15 : x
  2. Step 2: Convert to fraction form
    253,781.16/380,672.02 = 76,288.15/x
  3. Step 3: Cross multiply
    253,781.16x = 380,672.02 × 76,288.15
  4. Step 4: Simplify right side
    253,781.16x = 29,040,764,162.56
  5. Step 5: Solve for x
    x = 29,040,764,162.56/253,781.16
  6. Step 6: Final answer
    x = 114,432.31

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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.