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Finding the Fourth Proportional to 344,420.20, 515,708.70 and 219,082.60

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Solution

The fourth proportional to 344,420.20, 515,708.70 and 219,082.60 is: 328,037.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,420.20 : 515,708.70 = 219,082.60 : x
  2. Step 2: Convert to fraction form
    344,420.20/515,708.70 = 219,082.60/x
  3. Step 3: Cross multiply
    344,420.20x = 515,708.70 × 219,082.60
  4. Step 4: Simplify right side
    344,420.20x = 112,982,802,838.62
  5. Step 5: Solve for x
    x = 112,982,802,838.62/344,420.20
  6. Step 6: Final answer
    x = 328,037.68

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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.