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Finding the Fourth Proportional to 439,999.56, 659,999.34 and 229,588.29

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Solution

The fourth proportional to 439,999.56, 659,999.34 and 229,588.29 is: 344,382.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,999.56 : 659,999.34 = 229,588.29 : x
  2. Step 2: Convert to fraction form
    439,999.56/659,999.34 = 229,588.29/x
  3. Step 3: Cross multiply
    439,999.56x = 659,999.34 × 229,588.29
  4. Step 4: Simplify right side
    439,999.56x = 151,528,119,871.73
  5. Step 5: Solve for x
    x = 151,528,119,871.73/439,999.56
  6. Step 6: Final answer
    x = 344,382.44

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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.