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Finding the Fourth Proportional to 223,406.80, 308,091.26 and 172,338.77

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Solution

The fourth proportional to 223,406.80, 308,091.26 and 172,338.77 is: 237,665.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,406.80 : 308,091.26 = 172,338.77 : x
  2. Step 2: Convert to fraction form
    223,406.80/308,091.26 = 172,338.77/x
  3. Step 3: Cross multiply
    223,406.80x = 308,091.26 × 172,338.77
  4. Step 4: Simplify right side
    223,406.80x = 53,096,069,997.23
  5. Step 5: Solve for x
    x = 53,096,069,997.23/223,406.80
  6. Step 6: Final answer
    x = 237,665.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.