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Finding the Fourth Proportional to 278,076.40, 417,114.60 and 173,100.40

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Solution

The fourth proportional to 278,076.40, 417,114.60 and 173,100.40 is: 259,650.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,076.40 : 417,114.60 = 173,100.40 : x
  2. Step 2: Convert to fraction form
    278,076.40/417,114.60 = 173,100.40/x
  3. Step 3: Cross multiply
    278,076.40x = 417,114.60 × 173,100.40
  4. Step 4: Simplify right side
    278,076.40x = 72,202,704,105.84
  5. Step 5: Solve for x
    x = 72,202,704,105.84/278,076.40
  6. Step 6: Final answer
    x = 259,650.60

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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.