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Finding the Fourth Proportional to 333,770.05, 500,655 and 221,669.20

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Solution

The fourth proportional to 333,770.05, 500,655 and 221,669.20 is: 332,503.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,770.05 : 500,655 = 221,669.20 : x
  2. Step 2: Convert to fraction form
    333,770.05/500,655 = 221,669.20/x
  3. Step 3: Cross multiply
    333,770.05x = 500,655 × 221,669.20
  4. Step 4: Simplify right side
    333,770.05x = 110,979,790,822.73
  5. Step 5: Solve for x
    x = 110,979,790,822.73/333,770.05
  6. Step 6: Final answer
    x = 332,503.75

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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.