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Finding the Fourth Proportional to 397,181.49, 548,114.12 and 215,893.83

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Solution

The fourth proportional to 397,181.49, 548,114.12 and 215,893.83 is: 297,935.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,181.49 : 548,114.12 = 215,893.83 : x
  2. Step 2: Convert to fraction form
    397,181.49/548,114.12 = 215,893.83/x
  3. Step 3: Cross multiply
    397,181.49x = 548,114.12 × 215,893.83
  4. Step 4: Simplify right side
    397,181.49x = 118,334,456,643.88
  5. Step 5: Solve for x
    x = 118,334,456,643.88/397,181.49
  6. Step 6: Final answer
    x = 297,935.48

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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.