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Finding the Fourth Proportional to 547,860.78, 756,033.32 and 306,145.33

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Solution

The fourth proportional to 547,860.78, 756,033.32 and 306,145.33 is: 422,472.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,860.78 : 756,033.32 = 306,145.33 : x
  2. Step 2: Convert to fraction form
    547,860.78/756,033.32 = 306,145.33/x
  3. Step 3: Cross multiply
    547,860.78x = 756,033.32 × 306,145.33
  4. Step 4: Simplify right side
    547,860.78x = 231,456,069,117.68
  5. Step 5: Solve for x
    x = 231,456,069,117.68/547,860.78
  6. Step 6: Final answer
    x = 422,472.42

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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.