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Finding the Fourth Proportional to 279,891.53, 386,235.72 and 159,016.04

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Solution

The fourth proportional to 279,891.53, 386,235.72 and 159,016.04 is: 219,433.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,891.53 : 386,235.72 = 159,016.04 : x
  2. Step 2: Convert to fraction form
    279,891.53/386,235.72 = 159,016.04/x
  3. Step 3: Cross multiply
    279,891.53x = 386,235.72 × 159,016.04
  4. Step 4: Simplify right side
    279,891.53x = 61,417,672,769.77
  5. Step 5: Solve for x
    x = 61,417,672,769.77/279,891.53
  6. Step 6: Final answer
    x = 219,433.84

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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.