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Finding the Fourth Proportional to 552,644.20, 829,403.70 and 215,846.20

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Solution

The fourth proportional to 552,644.20, 829,403.70 and 215,846.20 is: 323,940.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,644.20 : 829,403.70 = 215,846.20 : x
  2. Step 2: Convert to fraction form
    552,644.20/829,403.70 = 215,846.20/x
  3. Step 3: Cross multiply
    552,644.20x = 829,403.70 × 215,846.20
  4. Step 4: Simplify right side
    552,644.20x = 179,023,636,910.94
  5. Step 5: Solve for x
    x = 179,023,636,910.94/552,644.20
  6. Step 6: Final answer
    x = 323,940.14

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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.