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Finding the Fourth Proportional to 272,496.08, 408,153.36 and 131,960

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Solution

The fourth proportional to 272,496.08, 408,153.36 and 131,960 is: 197,653.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,496.08 : 408,153.36 = 131,960 : x
  2. Step 2: Convert to fraction form
    272,496.08/408,153.36 = 131,960/x
  3. Step 3: Cross multiply
    272,496.08x = 408,153.36 × 131,960
  4. Step 4: Simplify right side
    272,496.08x = 53,859,917,385.60
  5. Step 5: Solve for x
    x = 53,859,917,385.60/272,496.08
  6. Step 6: Final answer
    x = 197,653.92

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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.