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Finding the Fourth Proportional to 278,121.60, 417,182.40 and 267,235.20

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Solution

The fourth proportional to 278,121.60, 417,182.40 and 267,235.20 is: 400,852.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,121.60 : 417,182.40 = 267,235.20 : x
  2. Step 2: Convert to fraction form
    278,121.60/417,182.40 = 267,235.20/x
  3. Step 3: Cross multiply
    278,121.60x = 417,182.40 × 267,235.20
  4. Step 4: Simplify right side
    278,121.60x = 111,485,822,100.48
  5. Step 5: Solve for x
    x = 111,485,822,100.48/278,121.60
  6. Step 6: Final answer
    x = 400,852.80

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1.5x scale

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.