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Finding the Fourth Proportional to 268,920.92, 403,348.30 and 69,242.42

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Solution

The fourth proportional to 268,920.92, 403,348.30 and 69,242.42 is: 103,855.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,920.92 : 403,348.30 = 69,242.42 : x
  2. Step 2: Convert to fraction form
    268,920.92/403,348.30 = 69,242.42/x
  3. Step 3: Cross multiply
    268,920.92x = 403,348.30 × 69,242.42
  4. Step 4: Simplify right side
    268,920.92x = 27,928,812,394.89
  5. Step 5: Solve for x
    x = 27,928,812,394.89/268,920.92
  6. Step 6: Final answer
    x = 103,855.11

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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.