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Finding the Fourth Proportional to 279,350.16, 418,979.48 and 76,898.96

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Solution

The fourth proportional to 279,350.16, 418,979.48 and 76,898.96 is: 115,335.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,350.16 : 418,979.48 = 76,898.96 : x
  2. Step 2: Convert to fraction form
    279,350.16/418,979.48 = 76,898.96/x
  3. Step 3: Cross multiply
    279,350.16x = 418,979.48 × 76,898.96
  4. Step 4: Simplify right side
    279,350.16x = 32,219,086,273.34
  5. Step 5: Solve for x
    x = 32,219,086,273.34/279,350.16
  6. Step 6: Final answer
    x = 115,335.84

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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.