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Finding the Fourth Proportional to 279,116.52, 418,730.14 and 79,444.76

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Solution

The fourth proportional to 279,116.52, 418,730.14 and 79,444.76 is: 119,182.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,116.52 : 418,730.14 = 79,444.76 : x
  2. Step 2: Convert to fraction form
    279,116.52/418,730.14 = 79,444.76/x
  3. Step 3: Cross multiply
    279,116.52x = 418,730.14 × 79,444.76
  4. Step 4: Simplify right side
    279,116.52x = 33,265,915,477.07
  5. Step 5: Solve for x
    x = 33,265,915,477.07/279,116.52
  6. Step 6: Final answer
    x = 119,182.90

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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.