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Finding the Fourth Proportional to 379,099.81, 568,459.57 and 126,291.42

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Solution

The fourth proportional to 379,099.81, 568,459.57 and 126,291.42 is: 189,373.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,099.81 : 568,459.57 = 126,291.42 : x
  2. Step 2: Convert to fraction form
    379,099.81/568,459.57 = 126,291.42/x
  3. Step 3: Cross multiply
    379,099.81x = 568,459.57 × 126,291.42
  4. Step 4: Simplify right side
    379,099.81x = 71,791,564,571.01
  5. Step 5: Solve for x
    x = 71,791,564,571.01/379,099.81
  6. Step 6: Final answer
    x = 189,373.78

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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.