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Finding the Fourth Proportional to 377,644.01, 521,193.18 and 212,099.21

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Solution

The fourth proportional to 377,644.01, 521,193.18 and 212,099.21 is: 292,721.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,644.01 : 521,193.18 = 212,099.21 : x
  2. Step 2: Convert to fraction form
    377,644.01/521,193.18 = 212,099.21/x
  3. Step 3: Cross multiply
    377,644.01x = 521,193.18 × 212,099.21
  4. Step 4: Simplify right side
    377,644.01x = 110,544,661,879.27
  5. Step 5: Solve for x
    x = 110,544,661,879.27/377,644.01
  6. Step 6: Final answer
    x = 292,721.87

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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.