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Finding the Fourth Proportional to 548,362.72, 756,761.22 and 306,644.75

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Solution

The fourth proportional to 548,362.72, 756,761.22 and 306,644.75 is: 423,181.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,362.72 : 756,761.22 = 306,644.75 : x
  2. Step 2: Convert to fraction form
    548,362.72/756,761.22 = 306,644.75/x
  3. Step 3: Cross multiply
    548,362.72x = 756,761.22 × 306,644.75
  4. Step 4: Simplify right side
    548,362.72x = 232,056,854,170.64
  5. Step 5: Solve for x
    x = 232,056,854,170.64/548,362.72
  6. Step 6: Final answer
    x = 423,181.31

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1.5x scale

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.