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Finding the Fourth Proportional to 201,650, 278,277 and 112,247.12

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Solution

The fourth proportional to 201,650, 278,277 and 112,247.12 is: 154,901.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,650 : 278,277 = 112,247.12 : x
  2. Step 2: Convert to fraction form
    201,650/278,277 = 112,247.12/x
  3. Step 3: Cross multiply
    201,650x = 278,277 × 112,247.12
  4. Step 4: Simplify right side
    201,650x = 31,235,791,812.24
  5. Step 5: Solve for x
    x = 31,235,791,812.24/201,650
  6. Step 6: Final answer
    x = 154,901.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.