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Finding the Fourth Proportional to 453,178.26, 679,469.31 and 253,519.74

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Solution

The fourth proportional to 453,178.26, 679,469.31 and 253,519.74 is: 380,112.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,178.26 : 679,469.31 = 253,519.74 : x
  2. Step 2: Convert to fraction form
    453,178.26/679,469.31 = 253,519.74/x
  3. Step 3: Cross multiply
    453,178.26x = 679,469.31 × 253,519.74
  4. Step 4: Simplify right side
    453,178.26x = 172,258,882,809.18
  5. Step 5: Solve for x
    x = 172,258,882,809.18/453,178.26
  6. Step 6: Final answer
    x = 380,112.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.