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Finding the Fourth Proportional to 218,611.59, 327,868.16 and 142,686.24

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Solution

The fourth proportional to 218,611.59, 327,868.16 and 142,686.24 is: 213,997.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,611.59 : 327,868.16 = 142,686.24 : x
  2. Step 2: Convert to fraction form
    218,611.59/327,868.16 = 142,686.24/x
  3. Step 3: Cross multiply
    218,611.59x = 327,868.16 × 142,686.24
  4. Step 4: Simplify right side
    218,611.59x = 46,782,274,966.12
  5. Step 5: Solve for x
    x = 46,782,274,966.12/218,611.59
  6. Step 6: Final answer
    x = 213,997.23

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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.