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Finding the Fourth Proportional to 443,821.05, 612,471.60 and 239,871.33

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Solution

The fourth proportional to 443,821.05, 612,471.60 and 239,871.33 is: 331,021.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,821.05 : 612,471.60 = 239,871.33 : x
  2. Step 2: Convert to fraction form
    443,821.05/612,471.60 = 239,871.33/x
  3. Step 3: Cross multiply
    443,821.05x = 612,471.60 × 239,871.33
  4. Step 4: Simplify right side
    443,821.05x = 146,914,377,279.23
  5. Step 5: Solve for x
    x = 146,914,377,279.23/443,821.05
  6. Step 6: Final answer
    x = 331,021.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.