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Finding the Fourth Proportional to 272,033.64, 408,081.51 and 72,362.16

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Solution

The fourth proportional to 272,033.64, 408,081.51 and 72,362.16 is: 108,551.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,033.64 : 408,081.51 = 72,362.16 : x
  2. Step 2: Convert to fraction form
    272,033.64/408,081.51 = 72,362.16/x
  3. Step 3: Cross multiply
    272,033.64x = 408,081.51 × 72,362.16
  4. Step 4: Simplify right side
    272,033.64x = 29,529,659,519.66
  5. Step 5: Solve for x
    x = 29,529,659,519.66/272,033.64
  6. Step 6: Final answer
    x = 108,551.50

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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.