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Finding the Fourth Proportional to 397,797.39, 548,973.90 and 216,515.90

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Solution

The fourth proportional to 397,797.39, 548,973.90 and 216,515.90 is: 298,799.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,797.39 : 548,973.90 = 216,515.90 : x
  2. Step 2: Convert to fraction form
    397,797.39/548,973.90 = 216,515.90/x
  3. Step 3: Cross multiply
    397,797.39x = 548,973.90 × 216,515.90
  4. Step 4: Simplify right side
    397,797.39x = 118,861,575,290.14
  5. Step 5: Solve for x
    x = 118,861,575,290.14/397,797.39
  6. Step 6: Final answer
    x = 298,799.28

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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.