Home / 240,207.81-331,519.71-138,231.18

Finding the Fourth Proportional to 240,207.81, 331,519.71 and 138,231.18

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Solution

The fourth proportional to 240,207.81, 331,519.71 and 138,231.18 is: 190,777.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,207.81 : 331,519.71 = 138,231.18 : x
  2. Step 2: Convert to fraction form
    240,207.81/331,519.71 = 138,231.18/x
  3. Step 3: Cross multiply
    240,207.81x = 331,519.71 × 138,231.18
  4. Step 4: Simplify right side
    240,207.81x = 45,826,360,706.56
  5. Step 5: Solve for x
    x = 45,826,360,706.56/240,207.81
  6. Step 6: Final answer
    x = 190,777.98

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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.