Home / 268,481.17-402,721.59-78,943.11

Finding the Fourth Proportional to 268,481.17, 402,721.59 and 78,943.11

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Solution

The fourth proportional to 268,481.17, 402,721.59 and 78,943.11 is: 118,414.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,481.17 : 402,721.59 = 78,943.11 : x
  2. Step 2: Convert to fraction form
    268,481.17/402,721.59 = 78,943.11/x
  3. Step 3: Cross multiply
    268,481.17x = 402,721.59 × 78,943.11
  4. Step 4: Simplify right side
    268,481.17x = 31,792,094,778.74
  5. Step 5: Solve for x
    x = 31,792,094,778.74/268,481.17
  6. Step 6: Final answer
    x = 118,414.62

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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.