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Finding the Fourth Proportional to 381,274.38, 526,221.72 and 211,563.18

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Solution

The fourth proportional to 381,274.38, 526,221.72 and 211,563.18 is: 291,992.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,274.38 : 526,221.72 = 211,563.18 : x
  2. Step 2: Convert to fraction form
    381,274.38/526,221.72 = 211,563.18/x
  3. Step 3: Cross multiply
    381,274.38x = 526,221.72 × 211,563.18
  4. Step 4: Simplify right side
    381,274.38x = 111,329,140,468.27
  5. Step 5: Solve for x
    x = 111,329,140,468.27/381,274.38
  6. Step 6: Final answer
    x = 291,992.19

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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.