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Finding the Fourth Proportional to 272,911.60, 409,367.40 and 167,789.80

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Solution

The fourth proportional to 272,911.60, 409,367.40 and 167,789.80 is: 251,684.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,911.60 : 409,367.40 = 167,789.80 : x
  2. Step 2: Convert to fraction form
    272,911.60/409,367.40 = 167,789.80/x
  3. Step 3: Cross multiply
    272,911.60x = 409,367.40 × 167,789.80
  4. Step 4: Simplify right side
    272,911.60x = 68,687,674,172.52
  5. Step 5: Solve for x
    x = 68,687,674,172.52/272,911.60
  6. Step 6: Final answer
    x = 251,684.70

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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.