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Finding the Fourth Proportional to 397,181.99, 548,114.81 and 215,894.34

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Solution

The fourth proportional to 397,181.99, 548,114.81 and 215,894.34 is: 297,936.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,181.99 : 548,114.81 = 215,894.34 : x
  2. Step 2: Convert to fraction form
    397,181.99/548,114.81 = 215,894.34/x
  3. Step 3: Cross multiply
    397,181.99x = 548,114.81 × 215,894.34
  4. Step 4: Simplify right side
    397,181.99x = 118,334,884,069.70
  5. Step 5: Solve for x
    x = 118,334,884,069.70/397,181.99
  6. Step 6: Final answer
    x = 297,936.18

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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.