Home / 216,410.13-298,640.25-120,917.61

Finding the Fourth Proportional to 216,410.13, 298,640.25 and 120,917.61

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Solution

The fourth proportional to 216,410.13, 298,640.25 and 120,917.61 is: 166,863.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,410.13 : 298,640.25 = 120,917.61 : x
  2. Step 2: Convert to fraction form
    216,410.13/298,640.25 = 120,917.61/x
  3. Step 3: Cross multiply
    216,410.13x = 298,640.25 × 120,917.61
  4. Step 4: Simplify right side
    216,410.13x = 36,110,865,279.80
  5. Step 5: Solve for x
    x = 36,110,865,279.80/216,410.13
  6. Step 6: Final answer
    x = 166,863.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.