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Finding the Fourth Proportional to 218,212.40, 327,059.40 and 91,852.40

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Solution

The fourth proportional to 218,212.40, 327,059.40 and 91,852.40 is: 137,669.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,212.40 : 327,059.40 = 91,852.40 : x
  2. Step 2: Convert to fraction form
    218,212.40/327,059.40 = 91,852.40/x
  3. Step 3: Cross multiply
    218,212.40x = 327,059.40 × 91,852.40
  4. Step 4: Simplify right side
    218,212.40x = 30,041,190,832.56
  5. Step 5: Solve for x
    x = 30,041,190,832.56/218,212.40
  6. Step 6: Final answer
    x = 137,669.49

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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.