Home / 379,446.53-523,636.40-209,680.66

Finding the Fourth Proportional to 379,446.53, 523,636.40 and 209,680.66

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Solution

The fourth proportional to 379,446.53, 523,636.40 and 209,680.66 is: 289,359.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,446.53 : 523,636.40 = 209,680.66 : x
  2. Step 2: Convert to fraction form
    379,446.53/523,636.40 = 209,680.66/x
  3. Step 3: Cross multiply
    379,446.53x = 523,636.40 × 209,680.66
  4. Step 4: Simplify right side
    379,446.53x = 109,796,422,285.44
  5. Step 5: Solve for x
    x = 109,796,422,285.44/379,446.53
  6. Step 6: Final answer
    x = 289,359.41

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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.