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Finding the Fourth Proportional to 344,438.70, 515,736.45 and 219,101.10

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Solution

The fourth proportional to 344,438.70, 515,736.45 and 219,101.10 is: 328,065.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,438.70 : 515,736.45 = 219,101.10 : x
  2. Step 2: Convert to fraction form
    344,438.70/515,736.45 = 219,101.10/x
  3. Step 3: Cross multiply
    344,438.70x = 515,736.45 × 219,101.10
  4. Step 4: Simplify right side
    344,438.70x = 112,998,423,505.10
  5. Step 5: Solve for x
    x = 112,998,423,505.10/344,438.70
  6. Step 6: Final answer
    x = 328,065.41

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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.