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Finding the Fourth Proportional to 379,028, 523,050.86 and 217,878.92

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Solution

The fourth proportional to 379,028, 523,050.86 and 217,878.92 is: 300,668.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,028 : 523,050.86 = 217,878.92 : x
  2. Step 2: Convert to fraction form
    379,028/523,050.86 = 217,878.92/x
  3. Step 3: Cross multiply
    379,028x = 523,050.86 × 217,878.92
  4. Step 4: Simplify right side
    379,028x = 113,961,756,481.87
  5. Step 5: Solve for x
    x = 113,961,756,481.87/379,028
  6. Step 6: Final answer
    x = 300,668.44

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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.