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Finding the Fourth Proportional to 400,399.81, 600,599.81 and 134,160.91

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Solution

The fourth proportional to 400,399.81, 600,599.81 and 134,160.91 is: 201,241.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,399.81 : 600,599.81 = 134,160.91 : x
  2. Step 2: Convert to fraction form
    400,399.81/600,599.81 = 134,160.91/x
  3. Step 3: Cross multiply
    400,399.81x = 600,599.81 × 134,160.91
  4. Step 4: Simplify right side
    400,399.81x = 80,577,015,889.33
  5. Step 5: Solve for x
    x = 80,577,015,889.33/400,399.81
  6. Step 6: Final answer
    x = 201,241.40

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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.