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Finding the Fourth Proportional to 400,872.60, 601,364.28 and 134,709.24

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Solution

The fourth proportional to 400,872.60, 601,364.28 and 134,709.24 is: 202,082.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,872.60 : 601,364.28 = 134,709.24 : x
  2. Step 2: Convert to fraction form
    400,872.60/601,364.28 = 134,709.24/x
  3. Step 3: Cross multiply
    400,872.60x = 601,364.28 × 134,709.24
  4. Step 4: Simplify right side
    400,872.60x = 81,009,325,121.95
  5. Step 5: Solve for x
    x = 81,009,325,121.95/400,872.60
  6. Step 6: Final answer
    x = 202,082.47

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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.