Home / 312,712.50-431,589.57-198,001.81

Finding the Fourth Proportional to 312,712.50, 431,589.57 and 198,001.81

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Solution

The fourth proportional to 312,712.50, 431,589.57 and 198,001.81 is: 273,271.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,712.50 : 431,589.57 = 198,001.81 : x
  2. Step 2: Convert to fraction form
    312,712.50/431,589.57 = 198,001.81/x
  3. Step 3: Cross multiply
    312,712.50x = 431,589.57 × 198,001.81
  4. Step 4: Simplify right side
    312,712.50x = 85,455,515,700.65
  5. Step 5: Solve for x
    x = 85,455,515,700.65/312,712.50
  6. Step 6: Final answer
    x = 273,271.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.