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Finding the Fourth Proportional to 402,772.65, 555,797.75 and 221,481.69

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Solution

The fourth proportional to 402,772.65, 555,797.75 and 221,481.69 is: 305,629.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,772.65 : 555,797.75 = 221,481.69 : x
  2. Step 2: Convert to fraction form
    402,772.65/555,797.75 = 221,481.69/x
  3. Step 3: Cross multiply
    402,772.65x = 555,797.75 × 221,481.69
  4. Step 4: Simplify right side
    402,772.65x = 123,099,023,860.79
  5. Step 5: Solve for x
    x = 123,099,023,860.79/402,772.65
  6. Step 6: Final answer
    x = 305,629.05

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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.