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Finding the Fourth Proportional to 308,241.19, 462,361.78 and 86,625.19

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Solution

The fourth proportional to 308,241.19, 462,361.78 and 86,625.19 is: 129,937.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,241.19 : 462,361.78 = 86,625.19 : x
  2. Step 2: Convert to fraction form
    308,241.19/462,361.78 = 86,625.19/x
  3. Step 3: Cross multiply
    308,241.19x = 462,361.78 × 86,625.19
  4. Step 4: Simplify right side
    308,241.19x = 40,052,175,993.62
  5. Step 5: Solve for x
    x = 40,052,175,993.62/308,241.19
  6. Step 6: Final answer
    x = 129,937.78

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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.