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Finding the Fourth Proportional to 216,489.42, 324,612.62 and 149,100.66

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Solution

The fourth proportional to 216,489.42, 324,612.62 and 149,100.66 is: 223,567.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,489.42 : 324,612.62 = 149,100.66 : x
  2. Step 2: Convert to fraction form
    216,489.42/324,612.62 = 149,100.66/x
  3. Step 3: Cross multiply
    216,489.42x = 324,612.62 × 149,100.66
  4. Step 4: Simplify right side
    216,489.42x = 48,399,955,886.33
  5. Step 5: Solve for x
    x = 48,399,955,886.33/216,489.42
  6. Step 6: Final answer
    x = 223,567.30

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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.