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Finding the Fourth Proportional to 279,488.58, 419,174.09 and 89,965.89

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Solution

The fourth proportional to 279,488.58, 419,174.09 and 89,965.89 is: 134,929.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,488.58 : 419,174.09 = 89,965.89 : x
  2. Step 2: Convert to fraction form
    279,488.58/419,174.09 = 89,965.89/x
  3. Step 3: Cross multiply
    279,488.58x = 419,174.09 × 89,965.89
  4. Step 4: Simplify right side
    279,488.58x = 37,711,369,959.33
  5. Step 5: Solve for x
    x = 37,711,369,959.33/279,488.58
  6. Step 6: Final answer
    x = 134,929.92

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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.