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Finding the Fourth Proportional to 324,170.58, 486,217.59 and 87,531.72

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Solution

The fourth proportional to 324,170.58, 486,217.59 and 87,531.72 is: 131,287.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,170.58 : 486,217.59 = 87,531.72 : x
  2. Step 2: Convert to fraction form
    324,170.58/486,217.59 = 87,531.72/x
  3. Step 3: Cross multiply
    324,170.58x = 486,217.59 × 87,531.72
  4. Step 4: Simplify right side
    324,170.58x = 42,559,461,946.95
  5. Step 5: Solve for x
    x = 42,559,461,946.95/324,170.58
  6. Step 6: Final answer
    x = 131,287.24

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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.