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Finding the Fourth Proportional to 299,424.90, 449,465.40 and 187,231.80

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Solution

The fourth proportional to 299,424.90, 449,465.40 and 187,231.80 is: 281,052.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,424.90 : 449,465.40 = 187,231.80 : x
  2. Step 2: Convert to fraction form
    299,424.90/449,465.40 = 187,231.80/x
  3. Step 3: Cross multiply
    299,424.90x = 449,465.40 × 187,231.80
  4. Step 4: Simplify right side
    299,424.90x = 84,154,215,879.72
  5. Step 5: Solve for x
    x = 84,154,215,879.72/299,424.90
  6. Step 6: Final answer
    x = 281,052.83

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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.