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Finding the Fourth Proportional to 561,375.81, 774,698.40 and 303,252.69

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Solution

The fourth proportional to 561,375.81, 774,698.40 and 303,252.69 is: 418,488.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,375.81 : 774,698.40 = 303,252.69 : x
  2. Step 2: Convert to fraction form
    561,375.81/774,698.40 = 303,252.69/x
  3. Step 3: Cross multiply
    561,375.81x = 774,698.40 × 303,252.69
  4. Step 4: Simplify right side
    561,375.81x = 234,929,373,738.70
  5. Step 5: Solve for x
    x = 234,929,373,738.70/561,375.81
  6. Step 6: Final answer
    x = 418,488.59

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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.