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Finding the Fourth Proportional to 200,550.72, 300,830.40 and 67,435.20

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Solution

The fourth proportional to 200,550.72, 300,830.40 and 67,435.20 is: 101,154.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,550.72 : 300,830.40 = 67,435.20 : x
  2. Step 2: Convert to fraction form
    200,550.72/300,830.40 = 67,435.20/x
  3. Step 3: Cross multiply
    200,550.72x = 300,830.40 × 67,435.20
  4. Step 4: Simplify right side
    200,550.72x = 20,286,558,190.08
  5. Step 5: Solve for x
    x = 20,286,558,190.08/200,550.72
  6. Step 6: Final answer
    x = 101,154.25

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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.