Home / 240,215.88-331,510.68-138,256.86

Finding the Fourth Proportional to 240,215.88, 331,510.68 and 138,256.86

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Solution

The fourth proportional to 240,215.88, 331,510.68 and 138,256.86 is: 190,801.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,215.88 : 331,510.68 = 138,256.86 : x
  2. Step 2: Convert to fraction form
    240,215.88/331,510.68 = 138,256.86/x
  3. Step 3: Cross multiply
    240,215.88x = 331,510.68 × 138,256.86
  4. Step 4: Simplify right side
    240,215.88x = 45,833,625,673.26
  5. Step 5: Solve for x
    x = 45,833,625,673.26/240,215.88
  6. Step 6: Final answer
    x = 190,801.81

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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.