Home / 278,105.10-383,792.60-157,264.46

Finding the Fourth Proportional to 278,105.10, 383,792.60 and 157,264.46

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Solution

The fourth proportional to 278,105.10, 383,792.60 and 157,264.46 is: 217,029.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,105.10 : 383,792.60 = 157,264.46 : x
  2. Step 2: Convert to fraction form
    278,105.10/383,792.60 = 157,264.46/x
  3. Step 3: Cross multiply
    278,105.10x = 383,792.60 × 157,264.46
  4. Step 4: Simplify right side
    278,105.10x = 60,356,936,164.16
  5. Step 5: Solve for x
    x = 60,356,936,164.16/278,105.10
  6. Step 6: Final answer
    x = 217,029.23

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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.