Home / 268,820.31-403,170.30-79,240.20

Finding the Fourth Proportional to 268,820.31, 403,170.30 and 79,240.20

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Solution

The fourth proportional to 268,820.31, 403,170.30 and 79,240.20 is: 118,842.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,820.31 : 403,170.30 = 79,240.20 : x
  2. Step 2: Convert to fraction form
    268,820.31/403,170.30 = 79,240.20/x
  3. Step 3: Cross multiply
    268,820.31x = 403,170.30 × 79,240.20
  4. Step 4: Simplify right side
    268,820.31x = 31,947,295,206.06
  5. Step 5: Solve for x
    x = 31,947,295,206.06/268,820.31
  6. Step 6: Final answer
    x = 118,842.57

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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.