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Finding the Fourth Proportional to 268,900.80, 403,351.20 and 194,251.20

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Solution

The fourth proportional to 268,900.80, 403,351.20 and 194,251.20 is: 291,376.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,900.80 : 403,351.20 = 194,251.20 : x
  2. Step 2: Convert to fraction form
    268,900.80/403,351.20 = 194,251.20/x
  3. Step 3: Cross multiply
    268,900.80x = 403,351.20 × 194,251.20
  4. Step 4: Simplify right side
    268,900.80x = 78,351,454,621.44
  5. Step 5: Solve for x
    x = 78,351,454,621.44/268,900.80
  6. Step 6: Final answer
    x = 291,376.80

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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.