Home / 345,568.55-518,336.77-120,979.37

Finding the Fourth Proportional to 345,568.55, 518,336.77 and 120,979.37

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Solution

The fourth proportional to 345,568.55, 518,336.77 and 120,979.37 is: 181,463.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,568.55 : 518,336.77 = 120,979.37 : x
  2. Step 2: Convert to fraction form
    345,568.55/518,336.77 = 120,979.37/x
  3. Step 3: Cross multiply
    345,568.55x = 518,336.77 × 120,979.37
  4. Step 4: Simplify right side
    345,568.55x = 62,708,057,102.66
  5. Step 5: Solve for x
    x = 62,708,057,102.66/345,568.55
  6. Step 6: Final answer
    x = 181,463.44

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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.