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Finding the Fourth Proportional to 337,131.21, 505,399.73 and 137,619.21

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Solution

The fourth proportional to 337,131.21, 505,399.73 and 137,619.21 is: 206,307.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    337,131.21 : 505,399.73 = 137,619.21 : x
  2. Step 2: Convert to fraction form
    337,131.21/505,399.73 = 137,619.21/x
  3. Step 3: Cross multiply
    337,131.21x = 505,399.73 × 137,619.21
  4. Step 4: Simplify right side
    337,131.21x = 69,552,710,888.72
  5. Step 5: Solve for x
    x = 69,552,710,888.72/337,131.21
  6. Step 6: Final answer
    x = 206,307.54

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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.