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Finding the Fourth Proportional to 216,611.64, 324,421.63 and 132,185.93

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Solution

The fourth proportional to 216,611.64, 324,421.63 and 132,185.93 is: 197,976.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,611.64 : 324,421.63 = 132,185.93 : x
  2. Step 2: Convert to fraction form
    216,611.64/324,421.63 = 132,185.93/x
  3. Step 3: Cross multiply
    216,611.64x = 324,421.63 × 132,185.93
  4. Step 4: Simplify right side
    216,611.64x = 42,883,973,292.87
  5. Step 5: Solve for x
    x = 42,883,973,292.87/216,611.64
  6. Step 6: Final answer
    x = 197,976.31

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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.