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Finding the Fourth Proportional to 324,978.27, 487,368.98 and 88,290.20

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Solution

The fourth proportional to 324,978.27, 487,368.98 and 88,290.20 is: 132,408.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,978.27 : 487,368.98 = 88,290.20 : x
  2. Step 2: Convert to fraction form
    324,978.27/487,368.98 = 88,290.20/x
  3. Step 3: Cross multiply
    324,978.27x = 487,368.98 × 88,290.20
  4. Step 4: Simplify right side
    324,978.27x = 43,029,901,839.70
  5. Step 5: Solve for x
    x = 43,029,901,839.70/324,978.27
  6. Step 6: Final answer
    x = 132,408.55

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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.