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Finding the Fourth Proportional to 217,181.40, 325,512.90 and 111,946.20

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Solution

The fourth proportional to 217,181.40, 325,512.90 and 111,946.20 is: 167,785.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,181.40 : 325,512.90 = 111,946.20 : x
  2. Step 2: Convert to fraction form
    217,181.40/325,512.90 = 111,946.20/x
  3. Step 3: Cross multiply
    217,181.40x = 325,512.90 × 111,946.20
  4. Step 4: Simplify right side
    217,181.40x = 36,439,932,205.98
  5. Step 5: Solve for x
    x = 36,439,932,205.98/217,181.40
  6. Step 6: Final answer
    x = 167,785.70

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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.