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Finding the Fourth Proportional to 381,055.73, 525,900.21 and 219,954.02

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Solution

The fourth proportional to 381,055.73, 525,900.21 and 219,954.02 is: 303,561.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,055.73 : 525,900.21 = 219,954.02 : x
  2. Step 2: Convert to fraction form
    381,055.73/525,900.21 = 219,954.02/x
  3. Step 3: Cross multiply
    381,055.73x = 525,900.21 × 219,954.02
  4. Step 4: Simplify right side
    381,055.73x = 115,673,865,308.34
  5. Step 5: Solve for x
    x = 115,673,865,308.34/381,055.73
  6. Step 6: Final answer
    x = 303,561.54

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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.