Home / 278,245.08-417,045.24-128,170.44

Finding the Fourth Proportional to 278,245.08, 417,045.24 and 128,170.44

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Solution

The fourth proportional to 278,245.08, 417,045.24 and 128,170.44 is: 192,107.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,245.08 : 417,045.24 = 128,170.44 : x
  2. Step 2: Convert to fraction form
    278,245.08/417,045.24 = 128,170.44/x
  3. Step 3: Cross multiply
    278,245.08x = 417,045.24 × 128,170.44
  4. Step 4: Simplify right side
    278,245.08x = 53,452,871,910.71
  5. Step 5: Solve for x
    x = 53,452,871,910.71/278,245.08
  6. Step 6: Final answer
    x = 192,107.16

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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.