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Finding the Fourth Proportional to 381,847.62, 526,514.94 and 243,840.66

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Solution

The fourth proportional to 381,847.62, 526,514.94 and 243,840.66 is: 336,222.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,847.62 : 526,514.94 = 243,840.66 : x
  2. Step 2: Convert to fraction form
    381,847.62/526,514.94 = 243,840.66/x
  3. Step 3: Cross multiply
    381,847.62x = 526,514.94 × 243,840.66
  4. Step 4: Simplify right side
    381,847.62x = 128,385,750,469.46
  5. Step 5: Solve for x
    x = 128,385,750,469.46/381,847.62
  6. Step 6: Final answer
    x = 336,222.47

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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.