Home / 278,046.88-383,721.21-157,199.40

Finding the Fourth Proportional to 278,046.88, 383,721.21 and 157,199.40

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Solution

The fourth proportional to 278,046.88, 383,721.21 and 157,199.40 is: 216,944.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,046.88 : 383,721.21 = 157,199.40 : x
  2. Step 2: Convert to fraction form
    278,046.88/383,721.21 = 157,199.40/x
  3. Step 3: Cross multiply
    278,046.88x = 383,721.21 × 157,199.40
  4. Step 4: Simplify right side
    278,046.88x = 60,320,743,979.27
  5. Step 5: Solve for x
    x = 60,320,743,979.27/278,046.88
  6. Step 6: Final answer
    x = 216,944.51

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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.