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Finding the Fourth Proportional to 661,357.22, 992,087.12 and 205,891.25

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Solution

The fourth proportional to 661,357.22, 992,087.12 and 205,891.25 is: 308,852.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,357.22 : 992,087.12 = 205,891.25 : x
  2. Step 2: Convert to fraction form
    661,357.22/992,087.12 = 205,891.25/x
  3. Step 3: Cross multiply
    661,357.22x = 992,087.12 × 205,891.25
  4. Step 4: Simplify right side
    661,357.22x = 204,262,058,696.46
  5. Step 5: Solve for x
    x = 204,262,058,696.46/661,357.22
  6. Step 6: Final answer
    x = 308,852.84

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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.