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Finding the Fourth Proportional to 272,003.60, 407,890.20 and 131,805.20

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Solution

The fourth proportional to 272,003.60, 407,890.20 and 131,805.20 is: 197,651.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,003.60 : 407,890.20 = 131,805.20 : x
  2. Step 2: Convert to fraction form
    272,003.60/407,890.20 = 131,805.20/x
  3. Step 3: Cross multiply
    272,003.60x = 407,890.20 × 131,805.20
  4. Step 4: Simplify right side
    272,003.60x = 53,762,049,389.04
  5. Step 5: Solve for x
    x = 53,762,049,389.04/272,003.60
  6. Step 6: Final answer
    x = 197,651.98

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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.