Home / 268,890.89-403,585.72-135,864.57

Finding the Fourth Proportional to 268,890.89, 403,585.72 and 135,864.57

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Solution

The fourth proportional to 268,890.89, 403,585.72 and 135,864.57 is: 203,922.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,890.89 : 403,585.72 = 135,864.57 : x
  2. Step 2: Convert to fraction form
    268,890.89/403,585.72 = 135,864.57/x
  3. Step 3: Cross multiply
    268,890.89x = 403,585.72 × 135,864.57
  4. Step 4: Simplify right side
    268,890.89x = 54,832,999,966.28
  5. Step 5: Solve for x
    x = 54,832,999,966.28/268,890.89
  6. Step 6: Final answer
    x = 203,922.86

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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.