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Finding the Fourth Proportional to 381,750, 526,836.87 and 211,995.06

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Solution

The fourth proportional to 381,750, 526,836.87 and 211,995.06 is: 292,565.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,750 : 526,836.87 = 211,995.06 : x
  2. Step 2: Convert to fraction form
    381,750/526,836.87 = 211,995.06/x
  3. Step 3: Cross multiply
    381,750x = 526,836.87 × 211,995.06
  4. Step 4: Simplify right side
    381,750x = 111,686,813,865.86
  5. Step 5: Solve for x
    x = 111,686,813,865.86/381,750
  6. Step 6: Final answer
    x = 292,565.33

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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.