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Finding the Fourth Proportional to 379,117.62, 523,182.75 and 209,351.73

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Solution

The fourth proportional to 379,117.62, 523,182.75 and 209,351.73 is: 288,905.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,117.62 : 523,182.75 = 209,351.73 : x
  2. Step 2: Convert to fraction form
    379,117.62/523,182.75 = 209,351.73/x
  3. Step 3: Cross multiply
    379,117.62x = 523,182.75 × 209,351.73
  4. Step 4: Simplify right side
    379,117.62x = 109,529,213,818.66
  5. Step 5: Solve for x
    x = 109,529,213,818.66/379,117.62
  6. Step 6: Final answer
    x = 288,905.63

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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.