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Finding the Fourth Proportional to 379,270.70, 568,715.60 and 126,461.70

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Solution

The fourth proportional to 379,270.70, 568,715.60 and 126,461.70 is: 189,629.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,270.70 : 568,715.60 = 126,461.70 : x
  2. Step 2: Convert to fraction form
    379,270.70/568,715.60 = 126,461.70/x
  3. Step 3: Cross multiply
    379,270.70x = 568,715.60 × 126,461.70
  4. Step 4: Simplify right side
    379,270.70x = 71,920,744,041.36
  5. Step 5: Solve for x
    x = 71,920,744,041.36/379,270.70
  6. Step 6: Final answer
    x = 189,629.05

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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.