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Finding the Fourth Proportional to 324,909.56, 487,364.40 and 88,287.20

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Solution

The fourth proportional to 324,909.56, 487,364.40 and 88,287.20 is: 132,430.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,909.56 : 487,364.40 = 88,287.20 : x
  2. Step 2: Convert to fraction form
    324,909.56/487,364.40 = 88,287.20/x
  3. Step 3: Cross multiply
    324,909.56x = 487,364.40 × 88,287.20
  4. Step 4: Simplify right side
    324,909.56x = 43,028,038,255.68
  5. Step 5: Solve for x
    x = 43,028,038,255.68/324,909.56
  6. Step 6: Final answer
    x = 132,430.82

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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.