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Finding the Fourth Proportional to 322,572.78, 445,069.08 and 195,223.77

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Solution

The fourth proportional to 322,572.78, 445,069.08 and 195,223.77 is: 269,359.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,572.78 : 445,069.08 = 195,223.77 : x
  2. Step 2: Convert to fraction form
    322,572.78/445,069.08 = 195,223.77/x
  3. Step 3: Cross multiply
    322,572.78x = 445,069.08 × 195,223.77
  4. Step 4: Simplify right side
    322,572.78x = 86,888,063,708.03
  5. Step 5: Solve for x
    x = 86,888,063,708.03/322,572.78
  6. Step 6: Final answer
    x = 269,359.57

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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.