Home / 193,780.20-290,494.46-172,785

Finding the Fourth Proportional to 193,780.20, 290,494.46 and 172,785

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Solution

The fourth proportional to 193,780.20, 290,494.46 and 172,785 is: 259,020.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,780.20 : 290,494.46 = 172,785 : x
  2. Step 2: Convert to fraction form
    193,780.20/290,494.46 = 172,785/x
  3. Step 3: Cross multiply
    193,780.20x = 290,494.46 × 172,785
  4. Step 4: Simplify right side
    193,780.20x = 50,193,085,271.10
  5. Step 5: Solve for x
    x = 50,193,085,271.10/193,780.20
  6. Step 6: Final answer
    x = 259,020.71

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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.