Home / 312,981.07-431,874.26-185,631.79

Finding the Fourth Proportional to 312,981.07, 431,874.26 and 185,631.79

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Solution

The fourth proportional to 312,981.07, 431,874.26 and 185,631.79 is: 256,148.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,981.07 : 431,874.26 = 185,631.79 : x
  2. Step 2: Convert to fraction form
    312,981.07/431,874.26 = 185,631.79/x
  3. Step 3: Cross multiply
    312,981.07x = 431,874.26 × 185,631.79
  4. Step 4: Simplify right side
    312,981.07x = 80,169,589,779.35
  5. Step 5: Solve for x
    x = 80,169,589,779.35/312,981.07
  6. Step 6: Final answer
    x = 256,148.37

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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.