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Finding the Fourth Proportional to 449,039.60, 673,656.60 and 133,528.40

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Solution

The fourth proportional to 449,039.60, 673,656.60 and 133,528.40 is: 200,321.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,039.60 : 673,656.60 = 133,528.40 : x
  2. Step 2: Convert to fraction form
    449,039.60/673,656.60 = 133,528.40/x
  3. Step 3: Cross multiply
    449,039.60x = 673,656.60 × 133,528.40
  4. Step 4: Simplify right side
    449,039.60x = 89,952,287,947.44
  5. Step 5: Solve for x
    x = 89,952,287,947.44/449,039.60
  6. Step 6: Final answer
    x = 200,321.50

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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.