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Finding the Fourth Proportional to 381,236.16, 526,123.08 and 211,470.24

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Solution

The fourth proportional to 381,236.16, 526,123.08 and 211,470.24 is: 291,838.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,236.16 : 526,123.08 = 211,470.24 : x
  2. Step 2: Convert to fraction form
    381,236.16/526,123.08 = 211,470.24/x
  3. Step 3: Cross multiply
    381,236.16x = 526,123.08 × 211,470.24
  4. Step 4: Simplify right side
    381,236.16x = 111,259,373,997.14
  5. Step 5: Solve for x
    x = 111,259,373,997.14/381,236.16
  6. Step 6: Final answer
    x = 291,838.46

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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.