Home / 278,260.20-383,999.04-157,398.88

Finding the Fourth Proportional to 278,260.20, 383,999.04 and 157,398.88

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Solution

The fourth proportional to 278,260.20, 383,999.04 and 157,398.88 is: 217,210.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,260.20 : 383,999.04 = 157,398.88 : x
  2. Step 2: Convert to fraction form
    278,260.20/383,999.04 = 157,398.88/x
  3. Step 3: Cross multiply
    278,260.20x = 383,999.04 × 157,398.88
  4. Step 4: Simplify right side
    278,260.20x = 60,441,018,817.08
  5. Step 5: Solve for x
    x = 60,441,018,817.08/278,260.20
  6. Step 6: Final answer
    x = 217,210.43

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1.5x scale

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.