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Finding the Fourth Proportional to 279,954.60, 386,320.70 and 159,079.11

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Solution

The fourth proportional to 279,954.60, 386,320.70 and 159,079.11 is: 219,519.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,954.60 : 386,320.70 = 159,079.11 : x
  2. Step 2: Convert to fraction form
    279,954.60/386,320.70 = 159,079.11/x
  3. Step 3: Cross multiply
    279,954.60x = 386,320.70 × 159,079.11
  4. Step 4: Simplify right side
    279,954.60x = 61,455,553,528.27
  5. Step 5: Solve for x
    x = 61,455,553,528.27/279,954.60
  6. Step 6: Final answer
    x = 219,519.71

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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.