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Finding the Fourth Proportional to 641,892.60, 962,579.70 and 220,951.80

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Solution

The fourth proportional to 641,892.60, 962,579.70 and 220,951.80 is: 331,338.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,892.60 : 962,579.70 = 220,951.80 : x
  2. Step 2: Convert to fraction form
    641,892.60/962,579.70 = 220,951.80/x
  3. Step 3: Cross multiply
    641,892.60x = 962,579.70 × 220,951.80
  4. Step 4: Simplify right side
    641,892.60x = 212,683,717,358.46
  5. Step 5: Solve for x
    x = 212,683,717,358.46/641,892.60
  6. Step 6: Final answer
    x = 331,338.48

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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.