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Finding the Fourth Proportional to 324,434.63, 486,653.09 and 99,793.55

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Solution

The fourth proportional to 324,434.63, 486,653.09 and 99,793.55 is: 149,690.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,434.63 : 486,653.09 = 99,793.55 : x
  2. Step 2: Convert to fraction form
    324,434.63/486,653.09 = 99,793.55/x
  3. Step 3: Cross multiply
    324,434.63x = 486,653.09 × 99,793.55
  4. Step 4: Simplify right side
    324,434.63x = 48,564,839,469.57
  5. Step 5: Solve for x
    x = 48,564,839,469.57/324,434.63
  6. Step 6: Final answer
    x = 149,690.68

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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.