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Finding the Fourth Proportional to 377,063.82, 520,293.95 and 221,922.90

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Solution

The fourth proportional to 377,063.82, 520,293.95 and 221,922.90 is: 306,221.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,063.82 : 520,293.95 = 221,922.90 : x
  2. Step 2: Convert to fraction form
    377,063.82/520,293.95 = 221,922.90/x
  3. Step 3: Cross multiply
    377,063.82x = 520,293.95 × 221,922.90
  4. Step 4: Simplify right side
    377,063.82x = 115,465,141,126.84
  5. Step 5: Solve for x
    x = 115,465,141,126.84/377,063.82
  6. Step 6: Final answer
    x = 306,221.75

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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.