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Finding the Fourth Proportional to 278,073.60, 417,110.40 and 267,187.20

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Solution

The fourth proportional to 278,073.60, 417,110.40 and 267,187.20 is: 400,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,073.60 : 417,110.40 = 267,187.20 : x
  2. Step 2: Convert to fraction form
    278,073.60/417,110.40 = 267,187.20/x
  3. Step 3: Cross multiply
    278,073.60x = 417,110.40 × 267,187.20
  4. Step 4: Simplify right side
    278,073.60x = 111,446,559,866.88
  5. Step 5: Solve for x
    x = 111,446,559,866.88/278,073.60
  6. Step 6: Final answer
    x = 400,780.80

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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.