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Finding the Fourth Proportional to 453,115.20, 679,089.60 and 275,433.60

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Solution

The fourth proportional to 453,115.20, 679,089.60 and 275,433.60 is: 412,795.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,115.20 : 679,089.60 = 275,433.60 : x
  2. Step 2: Convert to fraction form
    453,115.20/679,089.60 = 275,433.60/x
  3. Step 3: Cross multiply
    453,115.20x = 679,089.60 × 275,433.60
  4. Step 4: Simplify right side
    453,115.20x = 187,044,093,250.56
  5. Step 5: Solve for x
    x = 187,044,093,250.56/453,115.20
  6. Step 6: Final answer
    x = 412,795.89

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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.