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Finding the Fourth Proportional to 208,956.20, 313,639.10 and 103,893.80

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Solution

The fourth proportional to 208,956.20, 313,639.10 and 103,893.80 is: 155,942.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,956.20 : 313,639.10 = 103,893.80 : x
  2. Step 2: Convert to fraction form
    208,956.20/313,639.10 = 103,893.80/x
  3. Step 3: Cross multiply
    208,956.20x = 313,639.10 × 103,893.80
  4. Step 4: Simplify right side
    208,956.20x = 32,585,157,927.58
  5. Step 5: Solve for x
    x = 32,585,157,927.58/208,956.20
  6. Step 6: Final answer
    x = 155,942.53

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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.