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Finding the Fourth Proportional to 379,045.23, 568,076.17 and 154,143.87

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Solution

The fourth proportional to 379,045.23, 568,076.17 and 154,143.87 is: 231,015.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,045.23 : 568,076.17 = 154,143.87 : x
  2. Step 2: Convert to fraction form
    379,045.23/568,076.17 = 154,143.87/x
  3. Step 3: Cross multiply
    379,045.23x = 568,076.17 × 154,143.87
  4. Step 4: Simplify right side
    379,045.23x = 87,565,459,298.58
  5. Step 5: Solve for x
    x = 87,565,459,298.58/379,045.23
  6. Step 6: Final answer
    x = 231,015.86

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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.