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Finding the Fourth Proportional to 379,389.39, 523,666.44 and 250,422

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Solution

The fourth proportional to 379,389.39, 523,666.44 and 250,422 is: 345,654.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,389.39 : 523,666.44 = 250,422 : x
  2. Step 2: Convert to fraction form
    379,389.39/523,666.44 = 250,422/x
  3. Step 3: Cross multiply
    379,389.39x = 523,666.44 × 250,422
  4. Step 4: Simplify right side
    379,389.39x = 131,137,597,237.68
  5. Step 5: Solve for x
    x = 131,137,597,237.68/379,389.39
  6. Step 6: Final answer
    x = 345,654.36

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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.