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Finding the Fourth Proportional to 205,966.80, 308,950.20 and 58,222.80

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Solution

The fourth proportional to 205,966.80, 308,950.20 and 58,222.80 is: 87,334.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,966.80 : 308,950.20 = 58,222.80 : x
  2. Step 2: Convert to fraction form
    205,966.80/308,950.20 = 58,222.80/x
  3. Step 3: Cross multiply
    205,966.80x = 308,950.20 × 58,222.80
  4. Step 4: Simplify right side
    205,966.80x = 17,987,945,704.56
  5. Step 5: Solve for x
    x = 17,987,945,704.56/205,966.80
  6. Step 6: Final answer
    x = 87,334.20

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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.