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Finding the Fourth Proportional to 308,761.72, 462,395.08 and 213,725.60

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Solution

The fourth proportional to 308,761.72, 462,395.08 and 213,725.60 is: 320,070.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,761.72 : 462,395.08 = 213,725.60 : x
  2. Step 2: Convert to fraction form
    308,761.72/462,395.08 = 213,725.60/x
  3. Step 3: Cross multiply
    308,761.72x = 462,395.08 × 213,725.60
  4. Step 4: Simplify right side
    308,761.72x = 98,825,665,910.05
  5. Step 5: Solve for x
    x = 98,825,665,910.05/308,761.72
  6. Step 6: Final answer
    x = 320,070.98

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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.