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Finding the Fourth Proportional to 512,258.80, 768,618.60 and 231,631.60

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Solution

The fourth proportional to 512,258.80, 768,618.60 and 231,631.60 is: 347,551.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,258.80 : 768,618.60 = 231,631.60 : x
  2. Step 2: Convert to fraction form
    512,258.80/768,618.60 = 231,631.60/x
  3. Step 3: Cross multiply
    512,258.80x = 768,618.60 × 231,631.60
  4. Step 4: Simplify right side
    512,258.80x = 178,036,356,107.76
  5. Step 5: Solve for x
    x = 178,036,356,107.76/512,258.80
  6. Step 6: Final answer
    x = 347,551.58

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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.