Home / 400,921.20-601,396.32-134,690.40

Finding the Fourth Proportional to 400,921.20, 601,396.32 and 134,690.40

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Solution

The fourth proportional to 400,921.20, 601,396.32 and 134,690.40 is: 202,040.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,921.20 : 601,396.32 = 134,690.40 : x
  2. Step 2: Convert to fraction form
    400,921.20/601,396.32 = 134,690.40/x
  3. Step 3: Cross multiply
    400,921.20x = 601,396.32 × 134,690.40
  4. Step 4: Simplify right side
    400,921.20x = 81,002,310,899.33
  5. Step 5: Solve for x
    x = 81,002,310,899.33/400,921.20
  6. Step 6: Final answer
    x = 202,040.48

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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.