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Finding the Fourth Proportional to 300,343.68, 450,530.49 and 89,961.57

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Solution

The fourth proportional to 300,343.68, 450,530.49 and 89,961.57 is: 134,946.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,343.68 : 450,530.49 = 89,961.57 : x
  2. Step 2: Convert to fraction form
    300,343.68/450,530.49 = 89,961.57/x
  3. Step 3: Cross multiply
    300,343.68x = 450,530.49 × 89,961.57
  4. Step 4: Simplify right side
    300,343.68x = 40,530,430,213.27
  5. Step 5: Solve for x
    x = 40,530,430,213.27/300,343.68
  6. Step 6: Final answer
    x = 134,946.84

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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.