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Finding the Fourth Proportional to 268,376.90, 402,565.08 and 68,696.96

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Solution

The fourth proportional to 268,376.90, 402,565.08 and 68,696.96 is: 103,045.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,376.90 : 402,565.08 = 68,696.96 : x
  2. Step 2: Convert to fraction form
    268,376.90/402,565.08 = 68,696.96/x
  3. Step 3: Cross multiply
    268,376.90x = 402,565.08 × 68,696.96
  4. Step 4: Simplify right side
    268,376.90x = 27,654,997,198.16
  5. Step 5: Solve for x
    x = 27,654,997,198.16/268,376.90
  6. Step 6: Final answer
    x = 103,045.37

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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.