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Finding the Fourth Proportional to 379,753.28, 524,043.76 and 218,624.88

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Solution

The fourth proportional to 379,753.28, 524,043.76 and 218,624.88 is: 301,693.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,753.28 : 524,043.76 = 218,624.88 : x
  2. Step 2: Convert to fraction form
    379,753.28/524,043.76 = 218,624.88/x
  3. Step 3: Cross multiply
    379,753.28x = 524,043.76 × 218,624.88
  4. Step 4: Simplify right side
    379,753.28x = 114,569,004,144.75
  5. Step 5: Solve for x
    x = 114,569,004,144.75/379,753.28
  6. Step 6: Final answer
    x = 301,693.26

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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.