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Finding the Fourth Proportional to 308,646.90, 462,770.55 and 131,105.70

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Solution

The fourth proportional to 308,646.90, 462,770.55 and 131,105.70 is: 196,573.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,646.90 : 462,770.55 = 131,105.70 : x
  2. Step 2: Convert to fraction form
    308,646.90/462,770.55 = 131,105.70/x
  3. Step 3: Cross multiply
    308,646.90x = 462,770.55 × 131,105.70
  4. Step 4: Simplify right side
    308,646.90x = 60,671,856,897.14
  5. Step 5: Solve for x
    x = 60,671,856,897.14/308,646.90
  6. Step 6: Final answer
    x = 196,573.68

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1.5x scale

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.