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Finding the Fourth Proportional to 207,600.20, 311,400.30 and 67,358.83

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Solution

The fourth proportional to 207,600.20, 311,400.30 and 67,358.83 is: 101,038.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,600.20 : 311,400.30 = 67,358.83 : x
  2. Step 2: Convert to fraction form
    207,600.20/311,400.30 = 67,358.83/x
  3. Step 3: Cross multiply
    207,600.20x = 311,400.30 × 67,358.83
  4. Step 4: Simplify right side
    207,600.20x = 20,975,558,312.65
  5. Step 5: Solve for x
    x = 20,975,558,312.65/207,600.20
  6. Step 6: Final answer
    x = 101,038.24

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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.