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Finding the Fourth Proportional to 561,212.90, 774,490.41 and 306,568.26

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Solution

The fourth proportional to 561,212.90, 774,490.41 and 306,568.26 is: 423,073.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,212.90 : 774,490.41 = 306,568.26 : x
  2. Step 2: Convert to fraction form
    561,212.90/774,490.41 = 306,568.26/x
  3. Step 3: Cross multiply
    561,212.90x = 774,490.41 × 306,568.26
  4. Step 4: Simplify right side
    561,212.90x = 237,434,177,380.39
  5. Step 5: Solve for x
    x = 237,434,177,380.39/561,212.90
  6. Step 6: Final answer
    x = 423,073.27

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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.