Home / 345,057.12-517,979.52-231,289.56

Finding the Fourth Proportional to 345,057.12, 517,979.52 and 231,289.56

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Solution

The fourth proportional to 345,057.12, 517,979.52 and 231,289.56 is: 347,198.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,057.12 : 517,979.52 = 231,289.56 : x
  2. Step 2: Convert to fraction form
    345,057.12/517,979.52 = 231,289.56/x
  3. Step 3: Cross multiply
    345,057.12x = 517,979.52 × 231,289.56
  4. Step 4: Simplify right side
    345,057.12x = 119,803,255,269.81
  5. Step 5: Solve for x
    x = 119,803,255,269.81/345,057.12
  6. Step 6: Final answer
    x = 347,198.33

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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.