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Finding the Fourth Proportional to 381,064.73, 525,912.63 and 219,963.02

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Solution

The fourth proportional to 381,064.73, 525,912.63 and 219,963.02 is: 303,573.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,064.73 : 525,912.63 = 219,963.02 : x
  2. Step 2: Convert to fraction form
    381,064.73/525,912.63 = 219,963.02/x
  3. Step 3: Cross multiply
    381,064.73x = 525,912.63 × 219,963.02
  4. Step 4: Simplify right side
    381,064.73x = 115,681,330,350.94
  5. Step 5: Solve for x
    x = 115,681,330,350.94/381,064.73
  6. Step 6: Final answer
    x = 303,573.96

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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.