Home / 278,060.20-383,703.78-157,207.40

Finding the Fourth Proportional to 278,060.20, 383,703.78 and 157,207.40

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Solution

The fourth proportional to 278,060.20, 383,703.78 and 157,207.40 is: 216,935.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,060.20 : 383,703.78 = 157,207.40 : x
  2. Step 2: Convert to fraction form
    278,060.20/383,703.78 = 157,207.40/x
  3. Step 3: Cross multiply
    278,060.20x = 383,703.78 × 157,207.40
  4. Step 4: Simplify right side
    278,060.20x = 60,321,073,623.97
  5. Step 5: Solve for x
    x = 60,321,073,623.97/278,060.20
  6. Step 6: Final answer
    x = 216,935.30

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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.