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Finding the Fourth Proportional to 547,866.90, 756,041.85 and 306,151.47

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Solution

The fourth proportional to 547,866.90, 756,041.85 and 306,151.47 is: 422,480.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,866.90 : 756,041.85 = 306,151.47 : x
  2. Step 2: Convert to fraction form
    547,866.90/756,041.85 = 306,151.47/x
  3. Step 3: Cross multiply
    547,866.90x = 756,041.85 × 306,151.47
  4. Step 4: Simplify right side
    547,866.90x = 231,463,323,759.02
  5. Step 5: Solve for x
    x = 231,463,323,759.02/547,866.90
  6. Step 6: Final answer
    x = 422,480.94

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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.