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Finding the Fourth Proportional to 221,391.04, 304,780.68 and 211,222.84

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Solution

The fourth proportional to 221,391.04, 304,780.68 and 211,222.84 is: 290,782.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,391.04 : 304,780.68 = 211,222.84 : x
  2. Step 2: Convert to fraction form
    221,391.04/304,780.68 = 211,222.84/x
  3. Step 3: Cross multiply
    221,391.04x = 304,780.68 × 211,222.84
  4. Step 4: Simplify right side
    221,391.04x = 64,376,640,806.73
  5. Step 5: Solve for x
    x = 64,376,640,806.73/221,391.04
  6. Step 6: Final answer
    x = 290,782.50

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.