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Finding the Fourth Proportional to 324,367.80, 486,598.20 and 99,747.10

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Solution

The fourth proportional to 324,367.80, 486,598.20 and 99,747.10 is: 149,634.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,367.80 : 486,598.20 = 99,747.10 : x
  2. Step 2: Convert to fraction form
    324,367.80/486,598.20 = 99,747.10/x
  3. Step 3: Cross multiply
    324,367.80x = 486,598.20 × 99,747.10
  4. Step 4: Simplify right side
    324,367.80x = 48,536,759,315.22
  5. Step 5: Solve for x
    x = 48,536,759,315.22/324,367.80
  6. Step 6: Final answer
    x = 149,634.95

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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.