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Finding the Fourth Proportional to 279,501.89, 418,723.29 and 165,308.09

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Solution

The fourth proportional to 279,501.89, 418,723.29 and 165,308.09 is: 247,648.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,501.89 : 418,723.29 = 165,308.09 : x
  2. Step 2: Convert to fraction form
    279,501.89/418,723.29 = 165,308.09/x
  3. Step 3: Cross multiply
    279,501.89x = 418,723.29 × 165,308.09
  4. Step 4: Simplify right side
    279,501.89x = 69,218,345,214.80
  5. Step 5: Solve for x
    x = 69,218,345,214.80/279,501.89
  6. Step 6: Final answer
    x = 247,648.94

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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.