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Finding the Fourth Proportional to 381,074.01, 525,844.22 and 219,980.95

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Solution

The fourth proportional to 381,074.01, 525,844.22 and 219,980.95 is: 303,551.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,074.01 : 525,844.22 = 219,980.95 : x
  2. Step 2: Convert to fraction form
    381,074.01/525,844.22 = 219,980.95/x
  3. Step 3: Cross multiply
    381,074.01x = 525,844.22 × 219,980.95
  4. Step 4: Simplify right side
    381,074.01x = 115,675,711,067.61
  5. Step 5: Solve for x
    x = 115,675,711,067.61/381,074.01
  6. Step 6: Final answer
    x = 303,551.82

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Why These Related Problems?

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