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Finding the Fourth Proportional to 201,210.21, 301,627.71 and 67,997.31

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Solution

The fourth proportional to 201,210.21, 301,627.71 and 67,997.31 is: 101,932.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,210.21 : 301,627.71 = 67,997.31 : x
  2. Step 2: Convert to fraction form
    201,210.21/301,627.71 = 67,997.31/x
  3. Step 3: Cross multiply
    201,210.21x = 301,627.71 × 67,997.31
  4. Step 4: Simplify right side
    201,210.21x = 20,509,872,901.46
  5. Step 5: Solve for x
    x = 20,509,872,901.46/201,210.21
  6. Step 6: Final answer
    x = 101,932.57

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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.