Home / 312,780.38-431,598.29-222,103.31

Finding the Fourth Proportional to 312,780.38, 431,598.29 and 222,103.31

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Solution

The fourth proportional to 312,780.38, 431,598.29 and 222,103.31 is: 306,475.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,780.38 : 431,598.29 = 222,103.31 : x
  2. Step 2: Convert to fraction form
    312,780.38/431,598.29 = 222,103.31/x
  3. Step 3: Cross multiply
    312,780.38x = 431,598.29 × 222,103.31
  4. Step 4: Simplify right side
    312,780.38x = 95,859,405,530.83
  5. Step 5: Solve for x
    x = 95,859,405,530.83/312,780.38
  6. Step 6: Final answer
    x = 306,475.13

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1.5x scale

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.