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Finding the Fourth Proportional to 397,560.66, 548,859.96 and 261,988.53

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Solution

The fourth proportional to 397,560.66, 548,859.96 and 261,988.53 is: 361,693.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,560.66 : 548,859.96 = 261,988.53 : x
  2. Step 2: Convert to fraction form
    397,560.66/548,859.96 = 261,988.53/x
  3. Step 3: Cross multiply
    397,560.66x = 548,859.96 × 261,988.53
  4. Step 4: Simplify right side
    397,560.66x = 143,795,014,096.26
  5. Step 5: Solve for x
    x = 143,795,014,096.26/397,560.66
  6. Step 6: Final answer
    x = 361,693.27

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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.