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Finding the Fourth Proportional to 291,738.60, 388,261.17 and 291,738.60

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Solution

The fourth proportional to 291,738.60, 388,261.17 and 291,738.60 is: 388,261.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,738.60 : 388,261.17 = 291,738.60 : x
  2. Step 2: Convert to fraction form
    291,738.60/388,261.17 = 291,738.60/x
  3. Step 3: Cross multiply
    291,738.60x = 388,261.17 × 291,738.60
  4. Step 4: Simplify right side
    291,738.60x = 113,270,770,170.16
  5. Step 5: Solve for x
    x = 113,270,770,170.16/291,738.60
  6. Step 6: Final answer
    x = 388,261.17

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.