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Finding the Fourth Proportional to 397,261.62, 548,225.65 and 215,969.58

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Solution

The fourth proportional to 397,261.62, 548,225.65 and 215,969.58 is: 298,040.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,261.62 : 548,225.65 = 215,969.58 : x
  2. Step 2: Convert to fraction form
    397,261.62/548,225.65 = 215,969.58/x
  3. Step 3: Cross multiply
    397,261.62x = 548,225.65 × 215,969.58
  4. Step 4: Simplify right side
    397,261.62x = 118,400,063,375.73
  5. Step 5: Solve for x
    x = 118,400,063,375.73/397,261.62
  6. Step 6: Final answer
    x = 298,040.53

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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.