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Finding the Fourth Proportional to 659,086.29, 988,629.44 and 209,805.21

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Solution

The fourth proportional to 659,086.29, 988,629.44 and 209,805.21 is: 314,707.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,086.29 : 988,629.44 = 209,805.21 : x
  2. Step 2: Convert to fraction form
    659,086.29/988,629.44 = 209,805.21/x
  3. Step 3: Cross multiply
    659,086.29x = 988,629.44 × 209,805.21
  4. Step 4: Simplify right side
    659,086.29x = 207,419,606,222.36
  5. Step 5: Solve for x
    x = 207,419,606,222.36/659,086.29
  6. Step 6: Final answer
    x = 314,707.82

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Similar ratio
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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.