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Finding the Fourth Proportional to 324,563.55, 486,900.90 and 99,919.56

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Solution

The fourth proportional to 324,563.55, 486,900.90 and 99,919.56 is: 149,896.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,563.55 : 486,900.90 = 99,919.56 : x
  2. Step 2: Convert to fraction form
    324,563.55/486,900.90 = 99,919.56/x
  3. Step 3: Cross multiply
    324,563.55x = 486,900.90 × 99,919.56
  4. Step 4: Simplify right side
    324,563.55x = 48,650,923,691.60
  5. Step 5: Solve for x
    x = 48,650,923,691.60/324,563.55
  6. Step 6: Final answer
    x = 149,896.45

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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.