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Finding the Fourth Proportional to 200,620.20, 300,930.30 and 89,812.20

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Solution

The fourth proportional to 200,620.20, 300,930.30 and 89,812.20 is: 134,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,620.20 : 300,930.30 = 89,812.20 : x
  2. Step 2: Convert to fraction form
    200,620.20/300,930.30 = 89,812.20/x
  3. Step 3: Cross multiply
    200,620.20x = 300,930.30 × 89,812.20
  4. Step 4: Simplify right side
    200,620.20x = 27,027,212,289.66
  5. Step 5: Solve for x
    x = 27,027,212,289.66/200,620.20
  6. Step 6: Final answer
    x = 134,718.30

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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.