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Finding the Fourth Proportional to 891,999, 1,337,986.53 and 218,086.11

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Solution

The fourth proportional to 891,999, 1,337,986.53 and 218,086.11 is: 327,126.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,999 : 1,337,986.53 = 218,086.11 : x
  2. Step 2: Convert to fraction form
    891,999/1,337,986.53 = 218,086.11/x
  3. Step 3: Cross multiply
    891,999x = 1,337,986.53 × 218,086.11
  4. Step 4: Simplify right side
    891,999x = 291,796,277,560.10
  5. Step 5: Solve for x
    x = 291,796,277,560.10/891,999
  6. Step 6: Final answer
    x = 327,126.24

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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.