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Finding the Fourth Proportional to 383,882.11, 529,755.82 and 211,810.79

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Solution

The fourth proportional to 383,882.11, 529,755.82 and 211,810.79 is: 292,298.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,882.11 : 529,755.82 = 211,810.79 : x
  2. Step 2: Convert to fraction form
    383,882.11/529,755.82 = 211,810.79/x
  3. Step 3: Cross multiply
    383,882.11x = 529,755.82 × 211,810.79
  4. Step 4: Simplify right side
    383,882.11x = 112,207,996,092.52
  5. Step 5: Solve for x
    x = 112,207,996,092.52/383,882.11
  6. Step 6: Final answer
    x = 292,298.06

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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.