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Finding the Fourth Proportional to 381,753.62, 526,820.94 and 211,987.74

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Solution

The fourth proportional to 381,753.62, 526,820.94 and 211,987.74 is: 292,543.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,753.62 : 526,820.94 = 211,987.74 : x
  2. Step 2: Convert to fraction form
    381,753.62/526,820.94 = 211,987.74/x
  3. Step 3: Cross multiply
    381,753.62x = 526,820.94 × 211,987.74
  4. Step 4: Simplify right side
    381,753.62x = 111,679,580,455.28
  5. Step 5: Solve for x
    x = 111,679,580,455.28/381,753.62
  6. Step 6: Final answer
    x = 292,543.61

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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.