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Finding the Fourth Proportional to 324,147.11, 486,203.09 and 99,507.59

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Solution

The fourth proportional to 324,147.11, 486,203.09 and 99,507.59 is: 149,255.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,147.11 : 486,203.09 = 99,507.59 : x
  2. Step 2: Convert to fraction form
    324,147.11/486,203.09 = 99,507.59/x
  3. Step 3: Cross multiply
    324,147.11x = 486,203.09 × 99,507.59
  4. Step 4: Simplify right side
    324,147.11x = 48,380,895,554.21
  5. Step 5: Solve for x
    x = 48,380,895,554.21/324,147.11
  6. Step 6: Final answer
    x = 149,255.98

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1.5x scale

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.