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Finding the Fourth Proportional to 221,283.69, 331,974.90 and 63,499.85

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Solution

The fourth proportional to 221,283.69, 331,974.90 and 63,499.85 is: 95,263.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,283.69 : 331,974.90 = 63,499.85 : x
  2. Step 2: Convert to fraction form
    221,283.69/331,974.90 = 63,499.85/x
  3. Step 3: Cross multiply
    221,283.69x = 331,974.90 × 63,499.85
  4. Step 4: Simplify right side
    221,283.69x = 21,080,356,353.77
  5. Step 5: Solve for x
    x = 21,080,356,353.77/221,283.69
  6. Step 6: Final answer
    x = 95,263.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.