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Finding the Fourth Proportional to 397,263.62, 548,228.42 and 215,971.58

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Solution

The fourth proportional to 397,263.62, 548,228.42 and 215,971.58 is: 298,043.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,263.62 : 548,228.42 = 215,971.58 : x
  2. Step 2: Convert to fraction form
    397,263.62/548,228.42 = 215,971.58/x
  3. Step 3: Cross multiply
    397,263.62x = 548,228.42 × 215,971.58
  4. Step 4: Simplify right side
    397,263.62x = 118,401,754,247.30
  5. Step 5: Solve for x
    x = 118,401,754,247.30/397,263.62
  6. Step 6: Final answer
    x = 298,043.29

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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.