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Finding the Fourth Proportional to 656,993.76, 985,665.81 and 207,723.06

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Solution

The fourth proportional to 656,993.76, 985,665.81 and 207,723.06 is: 311,639.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,993.76 : 985,665.81 = 207,723.06 : x
  2. Step 2: Convert to fraction form
    656,993.76/985,665.81 = 207,723.06/x
  3. Step 3: Cross multiply
    656,993.76x = 985,665.81 × 207,723.06
  4. Step 4: Simplify right side
    656,993.76x = 204,745,518,190.58
  5. Step 5: Solve for x
    x = 204,745,518,190.58/656,993.76
  6. Step 6: Final answer
    x = 311,639.97

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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.