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Finding the Fourth Proportional to 397,475.40, 548,523.12 and 216,191.28

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Solution

The fourth proportional to 397,475.40, 548,523.12 and 216,191.28 is: 298,347.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,475.40 : 548,523.12 = 216,191.28 : x
  2. Step 2: Convert to fraction form
    397,475.40/548,523.12 = 216,191.28/x
  3. Step 3: Cross multiply
    397,475.40x = 548,523.12 × 216,191.28
  4. Step 4: Simplify right side
    397,475.40x = 118,585,915,422.39
  5. Step 5: Solve for x
    x = 118,585,915,422.39/397,475.40
  6. Step 6: Final answer
    x = 298,347.81

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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.