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Finding the Fourth Proportional to 439,608.16, 659,319.97 and 123,991.25

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Solution

The fourth proportional to 439,608.16, 659,319.97 and 123,991.25 is: 185,960.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,608.16 : 659,319.97 = 123,991.25 : x
  2. Step 2: Convert to fraction form
    439,608.16/659,319.97 = 123,991.25/x
  3. Step 3: Cross multiply
    439,608.16x = 659,319.97 × 123,991.25
  4. Step 4: Simplify right side
    439,608.16x = 81,749,909,645.08
  5. Step 5: Solve for x
    x = 81,749,909,645.08/439,608.16
  6. Step 6: Final answer
    x = 185,960.86

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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.