Home / 345,719.97-518,536.22-135,505.53

Finding the Fourth Proportional to 345,719.97, 518,536.22 and 135,505.53

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Solution

The fourth proportional to 345,719.97, 518,536.22 and 135,505.53 is: 203,241.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,719.97 : 518,536.22 = 135,505.53 : x
  2. Step 2: Convert to fraction form
    345,719.97/518,536.22 = 135,505.53/x
  3. Step 3: Cross multiply
    345,719.97x = 518,536.22 × 135,505.53
  4. Step 4: Simplify right side
    345,719.97x = 70,264,524,637.77
  5. Step 5: Solve for x
    x = 70,264,524,637.77/345,719.97
  6. Step 6: Final answer
    x = 203,241.15

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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.