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Finding the Fourth Proportional to 267,405.21, 400,663.11 and 188,352.45

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Solution

The fourth proportional to 267,405.21, 400,663.11 and 188,352.45 is: 282,215.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,405.21 : 400,663.11 = 188,352.45 : x
  2. Step 2: Convert to fraction form
    267,405.21/400,663.11 = 188,352.45/x
  3. Step 3: Cross multiply
    267,405.21x = 400,663.11 × 188,352.45
  4. Step 4: Simplify right side
    267,405.21x = 75,465,878,393.12
  5. Step 5: Solve for x
    x = 75,465,878,393.12/267,405.21
  6. Step 6: Final answer
    x = 282,215.44

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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.