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Finding the Fourth Proportional to 272,558.36, 408,812.48 and 72,871.59

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Solution

The fourth proportional to 272,558.36, 408,812.48 and 72,871.59 is: 109,300.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,558.36 : 408,812.48 = 72,871.59 : x
  2. Step 2: Convert to fraction form
    272,558.36/408,812.48 = 72,871.59/x
  3. Step 3: Cross multiply
    272,558.36x = 408,812.48 × 72,871.59
  4. Step 4: Simplify right side
    272,558.36x = 29,790,815,065.09
  5. Step 5: Solve for x
    x = 29,790,815,065.09/272,558.36
  6. Step 6: Final answer
    x = 109,300.68

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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.