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Finding the Fourth Proportional to 278,081.60, 417,122.40 and 173,105.60

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Solution

The fourth proportional to 278,081.60, 417,122.40 and 173,105.60 is: 259,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,081.60 : 417,122.40 = 173,105.60 : x
  2. Step 2: Convert to fraction form
    278,081.60/417,122.40 = 173,105.60/x
  3. Step 3: Cross multiply
    278,081.60x = 417,122.40 × 173,105.60
  4. Step 4: Simplify right side
    278,081.60x = 72,206,223,325.44
  5. Step 5: Solve for x
    x = 72,206,223,325.44/278,081.60
  6. Step 6: Final answer
    x = 259,658.40

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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.