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Finding the Fourth Proportional to 381,306.17, 526,249.18 and 220,160.95

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Solution

The fourth proportional to 381,306.17, 526,249.18 and 220,160.95 is: 303,849.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,306.17 : 526,249.18 = 220,160.95 : x
  2. Step 2: Convert to fraction form
    381,306.17/526,249.18 = 220,160.95/x
  3. Step 3: Cross multiply
    381,306.17x = 526,249.18 × 220,160.95
  4. Step 4: Simplify right side
    381,306.17x = 115,859,516,499.07
  5. Step 5: Solve for x
    x = 115,859,516,499.07/381,306.17
  6. Step 6: Final answer
    x = 303,849.05

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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.