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Finding the Fourth Proportional to 279,758.96, 386,067.44 and 152,434.56

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Solution

The fourth proportional to 279,758.96, 386,067.44 and 152,434.56 is: 210,359.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,758.96 : 386,067.44 = 152,434.56 : x
  2. Step 2: Convert to fraction form
    279,758.96/386,067.44 = 152,434.56/x
  3. Step 3: Cross multiply
    279,758.96x = 386,067.44 × 152,434.56
  4. Step 4: Simplify right side
    279,758.96x = 58,850,020,346.73
  5. Step 5: Solve for x
    x = 58,850,020,346.73/279,758.96
  6. Step 6: Final answer
    x = 210,359.73

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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.