Home / 278,084.15-383,775.78-157,226.60

Finding the Fourth Proportional to 278,084.15, 383,775.78 and 157,226.60

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Solution

The fourth proportional to 278,084.15, 383,775.78 and 157,226.60 is: 216,983.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,084.15 : 383,775.78 = 157,226.60 : x
  2. Step 2: Convert to fraction form
    278,084.15/383,775.78 = 157,226.60/x
  3. Step 3: Cross multiply
    278,084.15x = 383,775.78 × 157,226.60
  4. Step 4: Simplify right side
    278,084.15x = 60,339,761,051.75
  5. Step 5: Solve for x
    x = 60,339,761,051.75/278,084.15
  6. Step 6: Final answer
    x = 216,983.82

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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.