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Finding the Fourth Proportional to 324,354.80, 486,578.70 and 99,734.10

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Solution

The fourth proportional to 324,354.80, 486,578.70 and 99,734.10 is: 149,615.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,354.80 : 486,578.70 = 99,734.10 : x
  2. Step 2: Convert to fraction form
    324,354.80/486,578.70 = 99,734.10/x
  3. Step 3: Cross multiply
    324,354.80x = 486,578.70 × 99,734.10
  4. Step 4: Simplify right side
    324,354.80x = 48,528,488,723.67
  5. Step 5: Solve for x
    x = 48,528,488,723.67/324,354.80
  6. Step 6: Final answer
    x = 149,615.45

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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.