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Finding the Fourth Proportional to 208,957.20, 313,640.60 and 103,894.80

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Solution

The fourth proportional to 208,957.20, 313,640.60 and 103,894.80 is: 155,944.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,957.20 : 313,640.60 = 103,894.80 : x
  2. Step 2: Convert to fraction form
    208,957.20/313,640.60 = 103,894.80/x
  3. Step 3: Cross multiply
    208,957.20x = 313,640.60 × 103,894.80
  4. Step 4: Simplify right side
    208,957.20x = 32,585,627,408.88
  5. Step 5: Solve for x
    x = 32,585,627,408.88/208,957.20
  6. Step 6: Final answer
    x = 155,944.03

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1.5x scale

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.