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Finding the Fourth Proportional to 316,957.77, 476,028.97 and 279,020.61

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Solution

The fourth proportional to 316,957.77, 476,028.97 and 279,020.61 is: 419,052.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,957.77 : 476,028.97 = 279,020.61 : x
  2. Step 2: Convert to fraction form
    316,957.77/476,028.97 = 279,020.61/x
  3. Step 3: Cross multiply
    316,957.77x = 476,028.97 × 279,020.61
  4. Step 4: Simplify right side
    316,957.77x = 132,821,892,889.52
  5. Step 5: Solve for x
    x = 132,821,892,889.52/316,957.77
  6. Step 6: Final answer
    x = 419,052.33

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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.