Home / 641,638.60-962,544.30-221,043.40

Finding the Fourth Proportional to 641,638.60, 962,544.30 and 221,043.40

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Solution

The fourth proportional to 641,638.60, 962,544.30 and 221,043.40 is: 331,594.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,638.60 : 962,544.30 = 221,043.40 : x
  2. Step 2: Convert to fraction form
    641,638.60/962,544.30 = 221,043.40/x
  3. Step 3: Cross multiply
    641,638.60x = 962,544.30 × 221,043.40
  4. Step 4: Simplify right side
    641,638.60x = 212,764,064,722.62
  5. Step 5: Solve for x
    x = 212,764,064,722.62/641,638.60
  6. Step 6: Final answer
    x = 331,594.86

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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.