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Finding the Fourth Proportional to 279,330.32, 418,997.61 and 79,650.54

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Solution

The fourth proportional to 279,330.32, 418,997.61 and 79,650.54 is: 119,476.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,330.32 : 418,997.61 = 79,650.54 : x
  2. Step 2: Convert to fraction form
    279,330.32/418,997.61 = 79,650.54/x
  3. Step 3: Cross multiply
    279,330.32x = 418,997.61 × 79,650.54
  4. Step 4: Simplify right side
    279,330.32x = 33,373,385,895.21
  5. Step 5: Solve for x
    x = 33,373,385,895.21/279,330.32
  6. Step 6: Final answer
    x = 119,476.42

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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.