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Finding the Fourth Proportional to 400,660.72, 600,892.68 and 134,415.28

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Solution

The fourth proportional to 400,660.72, 600,892.68 and 134,415.28 is: 201,589.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,660.72 : 600,892.68 = 134,415.28 : x
  2. Step 2: Convert to fraction form
    400,660.72/600,892.68 = 134,415.28/x
  3. Step 3: Cross multiply
    400,660.72x = 600,892.68 × 134,415.28
  4. Step 4: Simplify right side
    400,660.72x = 80,769,157,832.15
  5. Step 5: Solve for x
    x = 80,769,157,832.15/400,660.72
  6. Step 6: Final answer
    x = 201,589.91

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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.