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Finding the Fourth Proportional to 220,802.76, 331,197.12 and 131,458.32

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Solution

The fourth proportional to 220,802.76, 331,197.12 and 131,458.32 is: 197,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,802.76 : 331,197.12 = 131,458.32 : x
  2. Step 2: Convert to fraction form
    220,802.76/331,197.12 = 131,458.32/x
  3. Step 3: Cross multiply
    220,802.76x = 331,197.12 × 131,458.32
  4. Step 4: Simplify right side
    220,802.76x = 43,538,616,984.04
  5. Step 5: Solve for x
    x = 43,538,616,984.04/220,802.76
  6. Step 6: Final answer
    x = 197,183.30

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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.