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Finding the Fourth Proportional to 363,883.66, 545,222.07 and 221,297.65

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Solution

The fourth proportional to 363,883.66, 545,222.07 and 221,297.65 is: 331,579.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,883.66 : 545,222.07 = 221,297.65 : x
  2. Step 2: Convert to fraction form
    363,883.66/545,222.07 = 221,297.65/x
  3. Step 3: Cross multiply
    363,883.66x = 545,222.07 × 221,297.65
  4. Step 4: Simplify right side
    363,883.66x = 120,656,362,819.14
  5. Step 5: Solve for x
    x = 120,656,362,819.14/363,883.66
  6. Step 6: Final answer
    x = 331,579.50

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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.