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Finding the Fourth Proportional to 300,068.10, 450,125.91 and 100,389.54

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Solution

The fourth proportional to 300,068.10, 450,125.91 and 100,389.54 is: 150,592.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,068.10 : 450,125.91 = 100,389.54 : x
  2. Step 2: Convert to fraction form
    300,068.10/450,125.91 = 100,389.54/x
  3. Step 3: Cross multiply
    300,068.10x = 450,125.91 × 100,389.54
  4. Step 4: Simplify right side
    300,068.10x = 45,187,933,046.98
  5. Step 5: Solve for x
    x = 45,187,933,046.98/300,068.10
  6. Step 6: Final answer
    x = 150,592.26

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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.