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Finding the Fourth Proportional to 267,112.80, 400,669.20 and 265,269.60

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Solution

The fourth proportional to 267,112.80, 400,669.20 and 265,269.60 is: 397,904.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,112.80 : 400,669.20 = 265,269.60 : x
  2. Step 2: Convert to fraction form
    267,112.80/400,669.20 = 265,269.60/x
  3. Step 3: Cross multiply
    267,112.80x = 400,669.20 × 265,269.60
  4. Step 4: Simplify right side
    267,112.80x = 106,285,358,416.32
  5. Step 5: Solve for x
    x = 106,285,358,416.32/267,112.80
  6. Step 6: Final answer
    x = 397,904.40

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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.