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Finding the Fourth Proportional to 324,360.28, 486,586.98 and 99,739.60

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Solution

The fourth proportional to 324,360.28, 486,586.98 and 99,739.60 is: 149,623.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,360.28 : 486,586.98 = 99,739.60 : x
  2. Step 2: Convert to fraction form
    324,360.28/486,586.98 = 99,739.60/x
  3. Step 3: Cross multiply
    324,360.28x = 486,586.98 × 99,739.60
  4. Step 4: Simplify right side
    324,360.28x = 48,531,990,750.41
  5. Step 5: Solve for x
    x = 48,531,990,750.41/324,360.28
  6. Step 6: Final answer
    x = 149,623.72

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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.