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Finding the Fourth Proportional to 379,037.67, 523,071.84 and 217,924.21

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Solution

The fourth proportional to 379,037.67, 523,071.84 and 217,924.21 is: 300,735.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,037.67 : 523,071.84 = 217,924.21 : x
  2. Step 2: Convert to fraction form
    379,037.67/523,071.84 = 217,924.21/x
  3. Step 3: Cross multiply
    379,037.67x = 523,071.84 × 217,924.21
  4. Step 4: Simplify right side
    379,037.67x = 113,990,017,505.25
  5. Step 5: Solve for x
    x = 113,990,017,505.25/379,037.67
  6. Step 6: Final answer
    x = 300,735.33

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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.