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Finding the Fourth Proportional to 397,237.84, 548,198.80 and 215,961.88

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Solution

The fourth proportional to 397,237.84, 548,198.80 and 215,961.88 is: 298,033.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,237.84 : 548,198.80 = 215,961.88 : x
  2. Step 2: Convert to fraction form
    397,237.84/548,198.80 = 215,961.88/x
  3. Step 3: Cross multiply
    397,237.84x = 548,198.80 × 215,961.88
  4. Step 4: Simplify right side
    397,237.84x = 118,390,043,461.74
  5. Step 5: Solve for x
    x = 118,390,043,461.74/397,237.84
  6. Step 6: Final answer
    x = 298,033.15

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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.