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Finding the Fourth Proportional to 439,005.67, 658,571.28 and 135,425.47

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Solution

The fourth proportional to 439,005.67, 658,571.28 and 135,425.47 is: 203,157.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,005.67 : 658,571.28 = 135,425.47 : x
  2. Step 2: Convert to fraction form
    439,005.67/658,571.28 = 135,425.47/x
  3. Step 3: Cross multiply
    439,005.67x = 658,571.28 × 135,425.47
  4. Step 4: Simplify right side
    439,005.67x = 89,187,325,345.70
  5. Step 5: Solve for x
    x = 89,187,325,345.70/439,005.67
  6. Step 6: Final answer
    x = 203,157.57

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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.