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Finding the Fourth Proportional to 279,589.38, 385,808.97 and 158,735.76

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Solution

The fourth proportional to 279,589.38, 385,808.97 and 158,735.76 is: 219,041.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,589.38 : 385,808.97 = 158,735.76 : x
  2. Step 2: Convert to fraction form
    279,589.38/385,808.97 = 158,735.76/x
  3. Step 3: Cross multiply
    279,589.38x = 385,808.97 × 158,735.76
  4. Step 4: Simplify right side
    279,589.38x = 61,241,680,067.77
  5. Step 5: Solve for x
    x = 61,241,680,067.77/279,589.38
  6. Step 6: Final answer
    x = 219,041.51

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1.5x scale

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.