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Finding the Fourth Proportional to 561,392.70, 774,722.10 and 303,269.73

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Solution

The fourth proportional to 561,392.70, 774,722.10 and 303,269.73 is: 418,512.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,392.70 : 774,722.10 = 303,269.73 : x
  2. Step 2: Convert to fraction form
    561,392.70/774,722.10 = 303,269.73/x
  3. Step 3: Cross multiply
    561,392.70x = 774,722.10 × 303,269.73
  4. Step 4: Simplify right side
    561,392.70x = 234,949,762,092.03
  5. Step 5: Solve for x
    x = 234,949,762,092.03/561,392.70
  6. Step 6: Final answer
    x = 418,512.32

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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.