Home / 215,981.22-298,053.24-120,487.86

Finding the Fourth Proportional to 215,981.22, 298,053.24 and 120,487.86

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Solution

The fourth proportional to 215,981.22, 298,053.24 and 120,487.86 is: 166,272.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,981.22 : 298,053.24 = 120,487.86 : x
  2. Step 2: Convert to fraction form
    215,981.22/298,053.24 = 120,487.86/x
  3. Step 3: Cross multiply
    215,981.22x = 298,053.24 × 120,487.86
  4. Step 4: Simplify right side
    215,981.22x = 35,911,797,053.67
  5. Step 5: Solve for x
    x = 35,911,797,053.67/215,981.22
  6. Step 6: Final answer
    x = 166,272.78

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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.