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Finding the Fourth Proportional to 262,688.41, 393,993.37 and 73,128.97

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Solution

The fourth proportional to 262,688.41, 393,993.37 and 73,128.97 is: 109,682.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,688.41 : 393,993.37 = 73,128.97 : x
  2. Step 2: Convert to fraction form
    262,688.41/393,993.37 = 73,128.97/x
  3. Step 3: Cross multiply
    262,688.41x = 393,993.37 × 73,128.97
  4. Step 4: Simplify right side
    262,688.41x = 28,812,329,334.93
  5. Step 5: Solve for x
    x = 28,812,329,334.93/262,688.41
  6. Step 6: Final answer
    x = 109,682.53

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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.