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Finding the Fourth Proportional to 548,087.49, 756,347.39 and 306,398.47

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Solution

The fourth proportional to 548,087.49, 756,347.39 and 306,398.47 is: 422,822.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,087.49 : 756,347.39 = 306,398.47 : x
  2. Step 2: Convert to fraction form
    548,087.49/756,347.39 = 306,398.47/x
  3. Step 3: Cross multiply
    548,087.49x = 756,347.39 × 306,398.47
  4. Step 4: Simplify right side
    548,087.49x = 231,743,681,552.50
  5. Step 5: Solve for x
    x = 231,743,681,552.50/548,087.49
  6. Step 6: Final answer
    x = 422,822.43

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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.