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Finding the Fourth Proportional to 324,357.80, 486,583.20 and 99,737.10

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Solution

The fourth proportional to 324,357.80, 486,583.20 and 99,737.10 is: 149,619.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,357.80 : 486,583.20 = 99,737.10 : x
  2. Step 2: Convert to fraction form
    324,357.80/486,583.20 = 99,737.10/x
  3. Step 3: Cross multiply
    324,357.80x = 486,583.20 × 99,737.10
  4. Step 4: Simplify right side
    324,357.80x = 48,530,397,276.72
  5. Step 5: Solve for x
    x = 48,530,397,276.72/324,357.80
  6. Step 6: Final answer
    x = 149,619.95

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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.