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Finding the Fourth Proportional to 217,113.60, 325,659.60 and 111,943.20

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Solution

The fourth proportional to 217,113.60, 325,659.60 and 111,943.20 is: 167,909.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,113.60 : 325,659.60 = 111,943.20 : x
  2. Step 2: Convert to fraction form
    217,113.60/325,659.60 = 111,943.20/x
  3. Step 3: Cross multiply
    217,113.60x = 325,659.60 × 111,943.20
  4. Step 4: Simplify right side
    217,113.60x = 36,455,377,734.72
  5. Step 5: Solve for x
    x = 36,455,377,734.72/217,113.60
  6. Step 6: Final answer
    x = 167,909.23

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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.