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Finding the Fourth Proportional to 379,029, 523,052.24 and 217,879.92

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Solution

The fourth proportional to 379,029, 523,052.24 and 217,879.92 is: 300,669.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,029 : 523,052.24 = 217,879.92 : x
  2. Step 2: Convert to fraction form
    379,029/523,052.24 = 217,879.92/x
  3. Step 3: Cross multiply
    379,029x = 523,052.24 × 217,879.92
  4. Step 4: Simplify right side
    379,029x = 113,962,580,207.02
  5. Step 5: Solve for x
    x = 113,962,580,207.02/379,029
  6. Step 6: Final answer
    x = 300,669.82

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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.