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Finding the Fourth Proportional to 397,685.64, 548,801.56 and 216,394.44

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Solution

The fourth proportional to 397,685.64, 548,801.56 and 216,394.44 is: 298,621.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,685.64 : 548,801.56 = 216,394.44 : x
  2. Step 2: Convert to fraction form
    397,685.64/548,801.56 = 216,394.44/x
  3. Step 3: Cross multiply
    397,685.64x = 548,801.56 × 216,394.44
  4. Step 4: Simplify right side
    397,685.64x = 118,757,606,247.33
  5. Step 5: Solve for x
    x = 118,757,606,247.33/397,685.64
  6. Step 6: Final answer
    x = 298,621.82

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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.