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Finding the Fourth Proportional to 208,772.20, 313,187.10 and 75,620.20

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Solution

The fourth proportional to 208,772.20, 313,187.10 and 75,620.20 is: 113,440.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,772.20 : 313,187.10 = 75,620.20 : x
  2. Step 2: Convert to fraction form
    208,772.20/313,187.10 = 75,620.20/x
  3. Step 3: Cross multiply
    208,772.20x = 313,187.10 × 75,620.20
  4. Step 4: Simplify right side
    208,772.20x = 23,683,271,139.42
  5. Step 5: Solve for x
    x = 23,683,271,139.42/208,772.20
  6. Step 6: Final answer
    x = 113,440.73

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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.