Home / 391,414.22-540,151.62-221,681.15

Finding the Fourth Proportional to 391,414.22, 540,151.62 and 221,681.15

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Solution

The fourth proportional to 391,414.22, 540,151.62 and 221,681.15 is: 305,919.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,414.22 : 540,151.62 = 221,681.15 : x
  2. Step 2: Convert to fraction form
    391,414.22/540,151.62 = 221,681.15/x
  3. Step 3: Cross multiply
    391,414.22x = 540,151.62 × 221,681.15
  4. Step 4: Simplify right side
    391,414.22x = 119,741,429,595.21
  5. Step 5: Solve for x
    x = 119,741,429,595.21/391,414.22
  6. Step 6: Final answer
    x = 305,919.98

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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.