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Finding the Fourth Proportional to 253,273.31, 379,910.67 and 103,513.62

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Solution

The fourth proportional to 253,273.31, 379,910.67 and 103,513.62 is: 155,270.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,273.31 : 379,910.67 = 103,513.62 : x
  2. Step 2: Convert to fraction form
    253,273.31/379,910.67 = 103,513.62/x
  3. Step 3: Cross multiply
    253,273.31x = 379,910.67 × 103,513.62
  4. Step 4: Simplify right side
    253,273.31x = 39,325,928,728.33
  5. Step 5: Solve for x
    x = 39,325,928,728.33/253,273.31
  6. Step 6: Final answer
    x = 155,270.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.