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Finding the Fourth Proportional to 262,170.81, 393,264.92 and 72,633.11

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Solution

The fourth proportional to 262,170.81, 393,264.92 and 72,633.11 is: 108,952.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,170.81 : 393,264.92 = 72,633.11 : x
  2. Step 2: Convert to fraction form
    262,170.81/393,264.92 = 72,633.11/x
  3. Step 3: Cross multiply
    262,170.81x = 393,264.92 × 72,633.11
  4. Step 4: Simplify right side
    262,170.81x = 28,564,052,408.76
  5. Step 5: Solve for x
    x = 28,564,052,408.76/262,170.81
  6. Step 6: Final answer
    x = 108,952.07

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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.