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Finding the Fourth Proportional to 209,480.20, 313,874.70 and 178,376.20

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Solution

The fourth proportional to 209,480.20, 313,874.70 and 178,376.20 is: 267,270.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,480.20 : 313,874.70 = 178,376.20 : x
  2. Step 2: Convert to fraction form
    209,480.20/313,874.70 = 178,376.20/x
  3. Step 3: Cross multiply
    209,480.20x = 313,874.70 × 178,376.20
  4. Step 4: Simplify right side
    209,480.20x = 55,987,776,262.14
  5. Step 5: Solve for x
    x = 55,987,776,262.14/209,480.20
  6. Step 6: Final answer
    x = 267,270.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.