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Finding the Fourth Proportional to 343,944.40, 515,916.60 and 203,630.80

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Solution

The fourth proportional to 343,944.40, 515,916.60 and 203,630.80 is: 305,446.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,944.40 : 515,916.60 = 203,630.80 : x
  2. Step 2: Convert to fraction form
    343,944.40/515,916.60 = 203,630.80/x
  3. Step 3: Cross multiply
    343,944.40x = 515,916.60 × 203,630.80
  4. Step 4: Simplify right side
    343,944.40x = 105,056,509,991.28
  5. Step 5: Solve for x
    x = 105,056,509,991.28/343,944.40
  6. Step 6: Final answer
    x = 305,446.20

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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.