Home / 218,977.55-328,514.93-100,620.35

Finding the Fourth Proportional to 218,977.55, 328,514.93 and 100,620.35

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Solution

The fourth proportional to 218,977.55, 328,514.93 and 100,620.35 is: 150,952.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,977.55 : 328,514.93 = 100,620.35 : x
  2. Step 2: Convert to fraction form
    218,977.55/328,514.93 = 100,620.35/x
  3. Step 3: Cross multiply
    218,977.55x = 328,514.93 × 100,620.35
  4. Step 4: Simplify right side
    218,977.55x = 33,055,286,733.72
  5. Step 5: Solve for x
    x = 33,055,286,733.72/218,977.55
  6. Step 6: Final answer
    x = 150,952.86

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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.