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Finding the Fourth Proportional to 262,496.20, 393,744.30 and 72,956.20

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Solution

The fourth proportional to 262,496.20, 393,744.30 and 72,956.20 is: 109,434.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,496.20 : 393,744.30 = 72,956.20 : x
  2. Step 2: Convert to fraction form
    262,496.20/393,744.30 = 72,956.20/x
  3. Step 3: Cross multiply
    262,496.20x = 393,744.30 × 72,956.20
  4. Step 4: Simplify right side
    262,496.20x = 28,726,087,899.66
  5. Step 5: Solve for x
    x = 28,726,087,899.66/262,496.20
  6. Step 6: Final answer
    x = 109,434.30

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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.