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Finding the Fourth Proportional to 269,990.48, 404,980.23 and 70,306.44

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Solution

The fourth proportional to 269,990.48, 404,980.23 and 70,306.44 is: 105,458.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,990.48 : 404,980.23 = 70,306.44 : x
  2. Step 2: Convert to fraction form
    269,990.48/404,980.23 = 70,306.44/x
  3. Step 3: Cross multiply
    269,990.48x = 404,980.23 × 70,306.44
  4. Step 4: Simplify right side
    269,990.48x = 28,472,718,241.68
  5. Step 5: Solve for x
    x = 28,472,718,241.68/269,990.48
  6. Step 6: Final answer
    x = 105,458.23

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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.