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Finding the Fourth Proportional to 379,479.88, 523,682.75 and 218,331.70

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Solution

The fourth proportional to 379,479.88, 523,682.75 and 218,331.70 is: 301,298.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,479.88 : 523,682.75 = 218,331.70 : x
  2. Step 2: Convert to fraction form
    379,479.88/523,682.75 = 218,331.70/x
  3. Step 3: Cross multiply
    379,479.88x = 523,682.75 × 218,331.70
  4. Step 4: Simplify right side
    379,479.88x = 114,336,542,667.31
  5. Step 5: Solve for x
    x = 114,336,542,667.31/379,479.88
  6. Step 6: Final answer
    x = 301,298.04

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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.