Home / 278,320.60-417,103.26-128,230.84

Finding the Fourth Proportional to 278,320.60, 417,103.26 and 128,230.84

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Solution

The fourth proportional to 278,320.60, 417,103.26 and 128,230.84 is: 192,172.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,320.60 : 417,103.26 = 128,230.84 : x
  2. Step 2: Convert to fraction form
    278,320.60/417,103.26 = 128,230.84/x
  3. Step 3: Cross multiply
    278,320.60x = 417,103.26 × 128,230.84
  4. Step 4: Simplify right side
    278,320.60x = 53,485,501,396.54
  5. Step 5: Solve for x
    x = 53,485,501,396.54/278,320.60
  6. Step 6: Final answer
    x = 192,172.27

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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.