Home / 420,249.89-579,942.15-238,961.87

Finding the Fourth Proportional to 420,249.89, 579,942.15 and 238,961.87

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Solution

The fourth proportional to 420,249.89, 579,942.15 and 238,961.87 is: 329,765.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,249.89 : 579,942.15 = 238,961.87 : x
  2. Step 2: Convert to fraction form
    420,249.89/579,942.15 = 238,961.87/x
  3. Step 3: Cross multiply
    420,249.89x = 579,942.15 × 238,961.87
  4. Step 4: Simplify right side
    420,249.89x = 138,584,060,655.82
  5. Step 5: Solve for x
    x = 138,584,060,655.82/420,249.89
  6. Step 6: Final answer
    x = 329,765.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.