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Finding the Fourth Proportional to 230,490.63, 345,655.98 and 80,727.60

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Solution

The fourth proportional to 230,490.63, 345,655.98 and 80,727.60 is: 121,063.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,490.63 : 345,655.98 = 80,727.60 : x
  2. Step 2: Convert to fraction form
    230,490.63/345,655.98 = 80,727.60/x
  3. Step 3: Cross multiply
    230,490.63x = 345,655.98 × 80,727.60
  4. Step 4: Simplify right side
    230,490.63x = 27,903,977,691.05
  5. Step 5: Solve for x
    x = 27,903,977,691.05/230,490.63
  6. Step 6: Final answer
    x = 121,063.39

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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.