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Finding the Fourth Proportional to 268,800.80, 403,249.80 and 135,345.20

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Solution

The fourth proportional to 268,800.80, 403,249.80 and 135,345.20 is: 203,042.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,800.80 : 403,249.80 = 135,345.20 : x
  2. Step 2: Convert to fraction form
    268,800.80/403,249.80 = 135,345.20/x
  3. Step 3: Cross multiply
    268,800.80x = 403,249.80 × 135,345.20
  4. Step 4: Simplify right side
    268,800.80x = 54,577,924,830.96
  5. Step 5: Solve for x
    x = 54,577,924,830.96/268,800.80
  6. Step 6: Final answer
    x = 203,042.27

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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.