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Finding the Fourth Proportional to 272,489.58, 408,143.61 and 131,953.50

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Solution

The fourth proportional to 272,489.58, 408,143.61 and 131,953.50 is: 197,644.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,489.58 : 408,143.61 = 131,953.50 : x
  2. Step 2: Convert to fraction form
    272,489.58/408,143.61 = 131,953.50/x
  3. Step 3: Cross multiply
    272,489.58x = 408,143.61 × 131,953.50
  4. Step 4: Simplify right side
    272,489.58x = 53,855,977,842.14
  5. Step 5: Solve for x
    x = 53,855,977,842.14/272,489.58
  6. Step 6: Final answer
    x = 197,644.17

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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.