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Finding the Fourth Proportional to 268,757.12, 403,384.88 and 135,731.04

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Solution

The fourth proportional to 268,757.12, 403,384.88 and 135,731.04 is: 203,722.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,757.12 : 403,384.88 = 135,731.04 : x
  2. Step 2: Convert to fraction form
    268,757.12/403,384.88 = 135,731.04/x
  3. Step 3: Cross multiply
    268,757.12x = 403,384.88 × 135,731.04
  4. Step 4: Simplify right side
    268,757.12x = 54,751,849,282.68
  5. Step 5: Solve for x
    x = 54,751,849,282.68/268,757.12
  6. Step 6: Final answer
    x = 203,722.41

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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.