Home / 276,822.60-415,234.18-77,143.56

Finding the Fourth Proportional to 276,822.60, 415,234.18 and 77,143.56

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Solution

The fourth proportional to 276,822.60, 415,234.18 and 77,143.56 is: 115,715.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,822.60 : 415,234.18 = 77,143.56 : x
  2. Step 2: Convert to fraction form
    276,822.60/415,234.18 = 77,143.56/x
  3. Step 3: Cross multiply
    276,822.60x = 415,234.18 × 77,143.56
  4. Step 4: Simplify right side
    276,822.60x = 32,032,642,878.88
  5. Step 5: Solve for x
    x = 32,032,642,878.88/276,822.60
  6. Step 6: Final answer
    x = 115,715.42

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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.