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Finding the Fourth Proportional to 548,371.30, 756,747.21 and 306,651.10

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Solution

The fourth proportional to 548,371.30, 756,747.21 and 306,651.10 is: 423,175.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,371.30 : 756,747.21 = 306,651.10 : x
  2. Step 2: Convert to fraction form
    548,371.30/756,747.21 = 306,651.10/x
  3. Step 3: Cross multiply
    548,371.30x = 756,747.21 × 306,651.10
  4. Step 4: Simplify right side
    548,371.30x = 232,057,364,368.43
  5. Step 5: Solve for x
    x = 232,057,364,368.43/548,371.30
  6. Step 6: Final answer
    x = 423,175.62

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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.