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Finding the Fourth Proportional to 265,172.75, 397,759.13 and 218,327.21

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Solution

The fourth proportional to 265,172.75, 397,759.13 and 218,327.21 is: 327,490.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,172.75 : 397,759.13 = 218,327.21 : x
  2. Step 2: Convert to fraction form
    265,172.75/397,759.13 = 218,327.21/x
  3. Step 3: Cross multiply
    265,172.75x = 397,759.13 × 218,327.21
  4. Step 4: Simplify right side
    265,172.75x = 86,841,641,104.93
  5. Step 5: Solve for x
    x = 86,841,641,104.93/265,172.75
  6. Step 6: Final answer
    x = 327,490.82

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1.5x scale

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.