Home / 345,719.72-518,535.84-135,505.28

Finding the Fourth Proportional to 345,719.72, 518,535.84 and 135,505.28

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Solution

The fourth proportional to 345,719.72, 518,535.84 and 135,505.28 is: 203,240.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,719.72 : 518,535.84 = 135,505.28 : x
  2. Step 2: Convert to fraction form
    345,719.72/518,535.84 = 135,505.28/x
  3. Step 3: Cross multiply
    345,719.72x = 518,535.84 × 135,505.28
  4. Step 4: Simplify right side
    345,719.72x = 70,264,344,189.24
  5. Step 5: Solve for x
    x = 70,264,344,189.24/345,719.72
  6. Step 6: Final answer
    x = 203,240.78

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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.