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Finding the Fourth Proportional to 561,261.67, 774,540.93 and 303,138.60

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Solution

The fourth proportional to 561,261.67, 774,540.93 and 303,138.60 is: 418,331.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,261.67 : 774,540.93 = 303,138.60 : x
  2. Step 2: Convert to fraction form
    561,261.67/774,540.93 = 303,138.60/x
  3. Step 3: Cross multiply
    561,261.67x = 774,540.93 × 303,138.60
  4. Step 4: Simplify right side
    561,261.67x = 234,793,253,162.90
  5. Step 5: Solve for x
    x = 234,793,253,162.90/561,261.67
  6. Step 6: Final answer
    x = 418,331.17

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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.