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Finding the Fourth Proportional to 279,502.89, 418,724.79 and 165,309.09

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Solution

The fourth proportional to 279,502.89, 418,724.79 and 165,309.09 is: 247,650.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,502.89 : 418,724.79 = 165,309.09 : x
  2. Step 2: Convert to fraction form
    279,502.89/418,724.79 = 165,309.09/x
  3. Step 3: Cross multiply
    279,502.89x = 418,724.79 × 165,309.09
  4. Step 4: Simplify right side
    279,502.89x = 69,219,013,995.34
  5. Step 5: Solve for x
    x = 69,219,013,995.34/279,502.89
  6. Step 6: Final answer
    x = 247,650.44

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1.5x scale

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.