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Finding the Fourth Proportional to 377,812, 521,380.56 and 208,045.72

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Solution

The fourth proportional to 377,812, 521,380.56 and 208,045.72 is: 287,103.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,812 : 521,380.56 = 208,045.72 : x
  2. Step 2: Convert to fraction form
    377,812/521,380.56 = 208,045.72/x
  3. Step 3: Cross multiply
    377,812x = 521,380.56 × 208,045.72
  4. Step 4: Simplify right side
    377,812x = 108,470,993,999.20
  5. Step 5: Solve for x
    x = 108,470,993,999.20/377,812
  6. Step 6: Final answer
    x = 287,103.09

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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.