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Finding the Fourth Proportional to 200,563.40, 300,772.20 and 100,690.40

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Solution

The fourth proportional to 200,563.40, 300,772.20 and 100,690.40 is: 150,999.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,563.40 : 300,772.20 = 100,690.40 : x
  2. Step 2: Convert to fraction form
    200,563.40/300,772.20 = 100,690.40/x
  3. Step 3: Cross multiply
    200,563.40x = 300,772.20 × 100,690.40
  4. Step 4: Simplify right side
    200,563.40x = 30,284,873,126.88
  5. Step 5: Solve for x
    x = 30,284,873,126.88/200,563.40
  6. Step 6: Final answer
    x = 150,999.00

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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.