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Finding the Fourth Proportional to 547,653.47, 755,734.79 and 305,887.91

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Solution

The fourth proportional to 547,653.47, 755,734.79 and 305,887.91 is: 422,110.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,653.47 : 755,734.79 = 305,887.91 : x
  2. Step 2: Convert to fraction form
    547,653.47/755,734.79 = 305,887.91/x
  3. Step 3: Cross multiply
    547,653.47x = 755,734.79 × 305,887.91
  4. Step 4: Simplify right side
    547,653.47x = 231,170,132,413.44
  5. Step 5: Solve for x
    x = 231,170,132,413.44/547,653.47
  6. Step 6: Final answer
    x = 422,110.23

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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.