Home / 215,917.20-298,019.12-147,120.39

Finding the Fourth Proportional to 215,917.20, 298,019.12 and 147,120.39

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Solution

The fourth proportional to 215,917.20, 298,019.12 and 147,120.39 is: 203,062.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,917.20 : 298,019.12 = 147,120.39 : x
  2. Step 2: Convert to fraction form
    215,917.20/298,019.12 = 147,120.39/x
  3. Step 3: Cross multiply
    215,917.20x = 298,019.12 × 147,120.39
  4. Step 4: Simplify right side
    215,917.20x = 43,844,688,426.25
  5. Step 5: Solve for x
    x = 43,844,688,426.25/215,917.20
  6. Step 6: Final answer
    x = 203,062.51

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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.