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Finding the Fourth Proportional to 548,857.80, 823,286.70 and 216,390.60

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Solution

The fourth proportional to 548,857.80, 823,286.70 and 216,390.60 is: 324,585.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,857.80 : 823,286.70 = 216,390.60 : x
  2. Step 2: Convert to fraction form
    548,857.80/823,286.70 = 216,390.60/x
  3. Step 3: Cross multiply
    548,857.80x = 823,286.70 × 216,390.60
  4. Step 4: Simplify right side
    548,857.80x = 178,151,502,985.02
  5. Step 5: Solve for x
    x = 178,151,502,985.02/548,857.80
  6. Step 6: Final answer
    x = 324,585.90

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.