Home / 272,280.80-407,935.20-131,729.60

Finding the Fourth Proportional to 272,280.80, 407,935.20 and 131,729.60

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Solution

The fourth proportional to 272,280.80, 407,935.20 and 131,729.60 is: 197,359.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,280.80 : 407,935.20 = 131,729.60 : x
  2. Step 2: Convert to fraction form
    272,280.80/407,935.20 = 131,729.60/x
  3. Step 3: Cross multiply
    272,280.80x = 407,935.20 × 131,729.60
  4. Step 4: Simplify right side
    272,280.80x = 53,737,140,721.92
  5. Step 5: Solve for x
    x = 53,737,140,721.92/272,280.80
  6. Step 6: Final answer
    x = 197,359.27

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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.