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Finding the Fourth Proportional to 548,410.36, 756,844.86 and 306,715.42

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Solution

The fourth proportional to 548,410.36, 756,844.86 and 306,715.42 is: 423,288.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,410.36 : 756,844.86 = 306,715.42 : x
  2. Step 2: Convert to fraction form
    548,410.36/756,844.86 = 306,715.42/x
  3. Step 3: Cross multiply
    548,410.36x = 756,844.86 × 306,715.42
  4. Step 4: Simplify right side
    548,410.36x = 232,135,989,109.74
  5. Step 5: Solve for x
    x = 232,135,989,109.74/548,410.36
  6. Step 6: Final answer
    x = 423,288.85

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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.