Home / 421,680.23-632,519.79-137,370.28

Finding the Fourth Proportional to 421,680.23, 632,519.79 and 137,370.28

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Solution

The fourth proportional to 421,680.23, 632,519.79 and 137,370.28 is: 206,055.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,680.23 : 632,519.79 = 137,370.28 : x
  2. Step 2: Convert to fraction form
    421,680.23/632,519.79 = 137,370.28/x
  3. Step 3: Cross multiply
    421,680.23x = 632,519.79 × 137,370.28
  4. Step 4: Simplify right side
    421,680.23x = 86,889,419,747.38
  5. Step 5: Solve for x
    x = 86,889,419,747.38/421,680.23
  6. Step 6: Final answer
    x = 206,055.24

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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.