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Finding the Fourth Proportional to 379,070.67, 522,991.60 and 250,073.21

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Solution

The fourth proportional to 379,070.67, 522,991.60 and 250,073.21 is: 345,017.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,070.67 : 522,991.60 = 250,073.21 : x
  2. Step 2: Convert to fraction form
    379,070.67/522,991.60 = 250,073.21/x
  3. Step 3: Cross multiply
    379,070.67x = 522,991.60 × 250,073.21
  4. Step 4: Simplify right side
    379,070.67x = 130,786,188,215.04
  5. Step 5: Solve for x
    x = 130,786,188,215.04/379,070.67
  6. Step 6: Final answer
    x = 345,017.96

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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.