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Finding the Fourth Proportional to 207,392.87, 311,210.06 and 87,442.30

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Solution

The fourth proportional to 207,392.87, 311,210.06 and 87,442.30 is: 131,214.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,392.87 : 311,210.06 = 87,442.30 : x
  2. Step 2: Convert to fraction form
    207,392.87/311,210.06 = 87,442.30/x
  3. Step 3: Cross multiply
    207,392.87x = 311,210.06 × 87,442.30
  4. Step 4: Simplify right side
    207,392.87x = 27,212,923,429.54
  5. Step 5: Solve for x
    x = 27,212,923,429.54/207,392.87
  6. Step 6: Final answer
    x = 131,214.36

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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.