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Finding the Fourth Proportional to 400,791.20, 601,256.04 and 134,577.40

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Solution

The fourth proportional to 400,791.20, 601,256.04 and 134,577.40 is: 201,889.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,791.20 : 601,256.04 = 134,577.40 : x
  2. Step 2: Convert to fraction form
    400,791.20/601,256.04 = 134,577.40/x
  3. Step 3: Cross multiply
    400,791.20x = 601,256.04 × 134,577.40
  4. Step 4: Simplify right side
    400,791.20x = 80,915,474,597.50
  5. Step 5: Solve for x
    x = 80,915,474,597.50/400,791.20
  6. Step 6: Final answer
    x = 201,889.35

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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.