Home / 278,189.10-383,917.17-155,680.44

Finding the Fourth Proportional to 278,189.10, 383,917.17 and 155,680.44

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Solution

The fourth proportional to 278,189.10, 383,917.17 and 155,680.44 is: 214,848.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,189.10 : 383,917.17 = 155,680.44 : x
  2. Step 2: Convert to fraction form
    278,189.10/383,917.17 = 155,680.44/x
  3. Step 3: Cross multiply
    278,189.10x = 383,917.17 × 155,680.44
  4. Step 4: Simplify right side
    278,189.10x = 59,768,393,949.15
  5. Step 5: Solve for x
    x = 59,768,393,949.15/278,189.10
  6. Step 6: Final answer
    x = 214,848.08

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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.