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Finding the Fourth Proportional to 303,440.70, 455,161.05 and 103,694.70

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Solution

The fourth proportional to 303,440.70, 455,161.05 and 103,694.70 is: 155,542.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,440.70 : 455,161.05 = 103,694.70 : x
  2. Step 2: Convert to fraction form
    303,440.70/455,161.05 = 103,694.70/x
  3. Step 3: Cross multiply
    303,440.70x = 455,161.05 × 103,694.70
  4. Step 4: Simplify right side
    303,440.70x = 47,197,788,531.44
  5. Step 5: Solve for x
    x = 47,197,788,531.44/303,440.70
  6. Step 6: Final answer
    x = 155,542.05

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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.