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Finding the Fourth Proportional to 272,635.53, 408,958.74 and 72,955.59

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Solution

The fourth proportional to 272,635.53, 408,958.74 and 72,955.59 is: 109,434.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,635.53 : 408,958.74 = 72,955.59 : x
  2. Step 2: Convert to fraction form
    272,635.53/408,958.74 = 72,955.59/x
  3. Step 3: Cross multiply
    272,635.53x = 408,958.74 × 72,955.59
  4. Step 4: Simplify right side
    272,635.53x = 29,835,826,162.36
  5. Step 5: Solve for x
    x = 29,835,826,162.36/272,635.53
  6. Step 6: Final answer
    x = 109,434.84

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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.