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Finding the Fourth Proportional to 379,111.92, 523,174.32 and 217,998.60

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Solution

The fourth proportional to 379,111.92, 523,174.32 and 217,998.60 is: 300,837.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,111.92 : 523,174.32 = 217,998.60 : x
  2. Step 2: Convert to fraction form
    379,111.92/523,174.32 = 217,998.60/x
  3. Step 3: Cross multiply
    379,111.92x = 523,174.32 × 217,998.60
  4. Step 4: Simplify right side
    379,111.92x = 114,051,269,315.95
  5. Step 5: Solve for x
    x = 114,051,269,315.95/379,111.92
  6. Step 6: Final answer
    x = 300,837.99

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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.