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Finding the Fourth Proportional to 548,493.11, 756,914.89 and 306,775.10

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Solution

The fourth proportional to 548,493.11, 756,914.89 and 306,775.10 is: 423,346.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,493.11 : 756,914.89 = 306,775.10 : x
  2. Step 2: Convert to fraction form
    548,493.11/756,914.89 = 306,775.10/x
  3. Step 3: Cross multiply
    548,493.11x = 756,914.89 × 306,775.10
  4. Step 4: Simplify right side
    548,493.11x = 232,202,643,735.40
  5. Step 5: Solve for x
    x = 232,202,643,735.40/548,493.11
  6. Step 6: Final answer
    x = 423,346.51

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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.