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Finding the Fourth Proportional to 626,600.70, 939,655.86 and 221,636.41

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Solution

The fourth proportional to 626,600.70, 939,655.86 and 221,636.41 is: 332,367.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,600.70 : 939,655.86 = 221,636.41 : x
  2. Step 2: Convert to fraction form
    626,600.70/939,655.86 = 221,636.41/x
  3. Step 3: Cross multiply
    626,600.70x = 939,655.86 × 221,636.41
  4. Step 4: Simplify right side
    626,600.70x = 208,261,953,551.15
  5. Step 5: Solve for x
    x = 208,261,953,551.15/626,600.70
  6. Step 6: Final answer
    x = 332,367.89

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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.