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Finding the Fourth Proportional to 400,927.20, 601,405.32 and 134,696.40

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Solution

The fourth proportional to 400,927.20, 601,405.32 and 134,696.40 is: 202,049.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,927.20 : 601,405.32 = 134,696.40 : x
  2. Step 2: Convert to fraction form
    400,927.20/601,405.32 = 134,696.40/x
  3. Step 3: Cross multiply
    400,927.20x = 601,405.32 × 134,696.40
  4. Step 4: Simplify right side
    400,927.20x = 81,007,131,544.85
  5. Step 5: Solve for x
    x = 81,007,131,544.85/400,927.20
  6. Step 6: Final answer
    x = 202,049.48

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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.