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Finding the Fourth Proportional to 268,045.10, 402,067.65 and 256,235.30

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Solution

The fourth proportional to 268,045.10, 402,067.65 and 256,235.30 is: 384,352.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,045.10 : 402,067.65 = 256,235.30 : x
  2. Step 2: Convert to fraction form
    268,045.10/402,067.65 = 256,235.30/x
  3. Step 3: Cross multiply
    268,045.10x = 402,067.65 × 256,235.30
  4. Step 4: Simplify right side
    268,045.10x = 103,023,924,918.05
  5. Step 5: Solve for x
    x = 103,023,924,918.05/268,045.10
  6. Step 6: Final answer
    x = 384,352.95

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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.