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Finding the Fourth Proportional to 279,325.52, 418,992.18 and 79,645.98

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Solution

The fourth proportional to 279,325.52, 418,992.18 and 79,645.98 is: 119,470.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,325.52 : 418,992.18 = 79,645.98 : x
  2. Step 2: Convert to fraction form
    279,325.52/418,992.18 = 79,645.98/x
  3. Step 3: Cross multiply
    279,325.52x = 418,992.18 × 79,645.98
  4. Step 4: Simplify right side
    279,325.52x = 33,371,042,390.21
  5. Step 5: Solve for x
    x = 33,371,042,390.21/279,325.52
  6. Step 6: Final answer
    x = 119,470.08

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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.