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Finding the Fourth Proportional to 561,362.98, 774,680.79 and 303,239.88

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Solution

The fourth proportional to 561,362.98, 774,680.79 and 303,239.88 is: 418,470.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,362.98 : 774,680.79 = 303,239.88 : x
  2. Step 2: Convert to fraction form
    561,362.98/774,680.79 = 303,239.88/x
  3. Step 3: Cross multiply
    561,362.98x = 774,680.79 × 303,239.88
  4. Step 4: Simplify right side
    561,362.98x = 234,914,109,797.91
  5. Step 5: Solve for x
    x = 234,914,109,797.91/561,362.98
  6. Step 6: Final answer
    x = 418,470.97

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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.