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Finding the Fourth Proportional to 324,044.20, 486,066.30 and 87,410.80

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Solution

The fourth proportional to 324,044.20, 486,066.30 and 87,410.80 is: 131,116.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,044.20 : 486,066.30 = 87,410.80 : x
  2. Step 2: Convert to fraction form
    324,044.20/486,066.30 = 87,410.80/x
  3. Step 3: Cross multiply
    324,044.20x = 486,066.30 × 87,410.80
  4. Step 4: Simplify right side
    324,044.20x = 42,487,444,136.04
  5. Step 5: Solve for x
    x = 42,487,444,136.04/324,044.20
  6. Step 6: Final answer
    x = 131,116.20

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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.