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Finding the Fourth Proportional to 324,058.40, 486,087.60 and 137,069.90

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Solution

The fourth proportional to 324,058.40, 486,087.60 and 137,069.90 is: 205,604.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,058.40 : 486,087.60 = 137,069.90 : x
  2. Step 2: Convert to fraction form
    324,058.40/486,087.60 = 137,069.90/x
  3. Step 3: Cross multiply
    324,058.40x = 486,087.60 × 137,069.90
  4. Step 4: Simplify right side
    324,058.40x = 66,627,978,723.24
  5. Step 5: Solve for x
    x = 66,627,978,723.24/324,058.40
  6. Step 6: Final answer
    x = 205,604.85

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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.