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Finding the Fourth Proportional to 324,491.89, 486,783.96 and 99,871.04

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Solution

The fourth proportional to 324,491.89, 486,783.96 and 99,871.04 is: 149,820.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,491.89 : 486,783.96 = 99,871.04 : x
  2. Step 2: Convert to fraction form
    324,491.89/486,783.96 = 99,871.04/x
  3. Step 3: Cross multiply
    324,491.89x = 486,783.96 × 99,871.04
  4. Step 4: Simplify right side
    324,491.89x = 48,615,620,340.52
  5. Step 5: Solve for x
    x = 48,615,620,340.52/324,491.89
  6. Step 6: Final answer
    x = 149,820.76

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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.