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Finding the Fourth Proportional to 324,361.28, 486,588.48 and 99,740.60

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Solution

The fourth proportional to 324,361.28, 486,588.48 and 99,740.60 is: 149,625.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,361.28 : 486,588.48 = 99,740.60 : x
  2. Step 2: Convert to fraction form
    324,361.28/486,588.48 = 99,740.60/x
  3. Step 3: Cross multiply
    324,361.28x = 486,588.48 × 99,740.60
  4. Step 4: Simplify right side
    324,361.28x = 48,532,626,948.29
  5. Step 5: Solve for x
    x = 48,532,626,948.29/324,361.28
  6. Step 6: Final answer
    x = 149,625.22

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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.