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Finding the Fourth Proportional to 207,637.89, 311,463.57 and 65,484.54

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Solution

The fourth proportional to 207,637.89, 311,463.57 and 65,484.54 is: 98,228.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,637.89 : 311,463.57 = 65,484.54 : x
  2. Step 2: Convert to fraction form
    207,637.89/311,463.57 = 65,484.54/x
  3. Step 3: Cross multiply
    207,637.89x = 311,463.57 × 65,484.54
  4. Step 4: Simplify right side
    207,637.89x = 20,396,048,608.21
  5. Step 5: Solve for x
    x = 20,396,048,608.21/207,637.89
  6. Step 6: Final answer
    x = 98,228.93

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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.