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Finding the Fourth Proportional to 377,511.23, 520,977.72 and 216,396.77

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Solution

The fourth proportional to 377,511.23, 520,977.72 and 216,396.77 is: 298,634.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,511.23 : 520,977.72 = 216,396.77 : x
  2. Step 2: Convert to fraction form
    377,511.23/520,977.72 = 216,396.77/x
  3. Step 3: Cross multiply
    377,511.23x = 520,977.72 × 216,396.77
  4. Step 4: Simplify right side
    377,511.23x = 112,737,894,056.56
  5. Step 5: Solve for x
    x = 112,737,894,056.56/377,511.23
  6. Step 6: Final answer
    x = 298,634.54

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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.