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Finding the Fourth Proportional to 268,902.80, 403,354.20 and 194,253.20

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Solution

The fourth proportional to 268,902.80, 403,354.20 and 194,253.20 is: 291,379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,902.80 : 403,354.20 = 194,253.20 : x
  2. Step 2: Convert to fraction form
    268,902.80/403,354.20 = 194,253.20/x
  3. Step 3: Cross multiply
    268,902.80x = 403,354.20 × 194,253.20
  4. Step 4: Simplify right side
    268,902.80x = 78,352,844,083.44
  5. Step 5: Solve for x
    x = 78,352,844,083.44/268,902.80
  6. Step 6: Final answer
    x = 291,379.80

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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.