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Finding the Fourth Proportional to 201,212.21, 301,630.71 and 67,999.31

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Solution

The fourth proportional to 201,212.21, 301,630.71 and 67,999.31 is: 101,935.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,212.21 : 301,630.71 = 67,999.31 : x
  2. Step 2: Convert to fraction form
    201,212.21/301,630.71 = 67,999.31/x
  3. Step 3: Cross multiply
    201,212.21x = 301,630.71 × 67,999.31
  4. Step 4: Simplify right side
    201,212.21x = 20,510,680,154.81
  5. Step 5: Solve for x
    x = 20,510,680,154.81/201,212.21
  6. Step 6: Final answer
    x = 101,935.56

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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.