Home / 231,987.72-320,262-142,615.56

Finding the Fourth Proportional to 231,987.72, 320,262 and 142,615.56

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Solution

The fourth proportional to 231,987.72, 320,262 and 142,615.56 is: 196,882.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,987.72 : 320,262 = 142,615.56 : x
  2. Step 2: Convert to fraction form
    231,987.72/320,262 = 142,615.56/x
  3. Step 3: Cross multiply
    231,987.72x = 320,262 × 142,615.56
  4. Step 4: Simplify right side
    231,987.72x = 45,674,344,476.72
  5. Step 5: Solve for x
    x = 45,674,344,476.72/231,987.72
  6. Step 6: Final answer
    x = 196,882.60

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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.