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Finding the Fourth Proportional to 378,046.20, 567,069.30 and 211,812.60

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Solution

The fourth proportional to 378,046.20, 567,069.30 and 211,812.60 is: 317,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,046.20 : 567,069.30 = 211,812.60 : x
  2. Step 2: Convert to fraction form
    378,046.20/567,069.30 = 211,812.60/x
  3. Step 3: Cross multiply
    378,046.20x = 567,069.30 × 211,812.60
  4. Step 4: Simplify right side
    378,046.20x = 120,112,422,813.18
  5. Step 5: Solve for x
    x = 120,112,422,813.18/378,046.20
  6. Step 6: Final answer
    x = 317,718.90

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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.