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Finding the Fourth Proportional to 269,312.96, 404,028.54 and 79,788.15

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Solution

The fourth proportional to 269,312.96, 404,028.54 and 79,788.15 is: 119,699.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,312.96 : 404,028.54 = 79,788.15 : x
  2. Step 2: Convert to fraction form
    269,312.96/404,028.54 = 79,788.15/x
  3. Step 3: Cross multiply
    269,312.96x = 404,028.54 × 79,788.15
  4. Step 4: Simplify right side
    269,312.96x = 32,236,689,753.80
  5. Step 5: Solve for x
    x = 32,236,689,753.80/269,312.96
  6. Step 6: Final answer
    x = 119,699.73

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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.