Home / 278,838.45-418,259.07-68,476.41

Finding the Fourth Proportional to 278,838.45, 418,259.07 and 68,476.41

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Solution

The fourth proportional to 278,838.45, 418,259.07 and 68,476.41 is: 102,714.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,838.45 : 418,259.07 = 68,476.41 : x
  2. Step 2: Convert to fraction form
    278,838.45/418,259.07 = 68,476.41/x
  3. Step 3: Cross multiply
    278,838.45x = 418,259.07 × 68,476.41
  4. Step 4: Simplify right side
    278,838.45x = 28,640,879,563.54
  5. Step 5: Solve for x
    x = 28,640,879,563.54/278,838.45
  6. Step 6: Final answer
    x = 102,714.96

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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.