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Finding the Fourth Proportional to 223,664.98, 308,675.46 and 128,180.56

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Solution

The fourth proportional to 223,664.98, 308,675.46 and 128,180.56 is: 176,899.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,664.98 : 308,675.46 = 128,180.56 : x
  2. Step 2: Convert to fraction form
    223,664.98/308,675.46 = 128,180.56/x
  3. Step 3: Cross multiply
    223,664.98x = 308,675.46 × 128,180.56
  4. Step 4: Simplify right side
    223,664.98x = 39,566,193,321.06
  5. Step 5: Solve for x
    x = 39,566,193,321.06/223,664.98
  6. Step 6: Final answer
    x = 176,899.37

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Why These Related Problems?

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