Home / 312,713.19-431,590.52-198,002.50

Finding the Fourth Proportional to 312,713.19, 431,590.52 and 198,002.50

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Solution

The fourth proportional to 312,713.19, 431,590.52 and 198,002.50 is: 273,272.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,713.19 : 431,590.52 = 198,002.50 : x
  2. Step 2: Convert to fraction form
    312,713.19/431,590.52 = 198,002.50/x
  3. Step 3: Cross multiply
    312,713.19x = 431,590.52 × 198,002.50
  4. Step 4: Simplify right side
    312,713.19x = 85,455,999,778.35
  5. Step 5: Solve for x
    x = 85,455,999,778.35/312,713.19
  6. Step 6: Final answer
    x = 273,272.77

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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.