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Finding the Fourth Proportional to 377,806, 521,372.28 and 208,039.72

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Solution

The fourth proportional to 377,806, 521,372.28 and 208,039.72 is: 287,094.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,806 : 521,372.28 = 208,039.72 : x
  2. Step 2: Convert to fraction form
    377,806/521,372.28 = 208,039.72/x
  3. Step 3: Cross multiply
    377,806x = 521,372.28 × 208,039.72
  4. Step 4: Simplify right side
    377,806x = 108,466,143,146.96
  5. Step 5: Solve for x
    x = 108,466,143,146.96/377,806
  6. Step 6: Final answer
    x = 287,094.81

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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.