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Finding the Fourth Proportional to 223,989.78, 336,020.31 and 74,235.36

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Solution

The fourth proportional to 223,989.78, 336,020.31 and 74,235.36 is: 111,364.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,989.78 : 336,020.31 = 74,235.36 : x
  2. Step 2: Convert to fraction form
    223,989.78/336,020.31 = 74,235.36/x
  3. Step 3: Cross multiply
    223,989.78x = 336,020.31 × 74,235.36
  4. Step 4: Simplify right side
    223,989.78x = 24,944,588,680.16
  5. Step 5: Solve for x
    x = 24,944,588,680.16/223,989.78
  6. Step 6: Final answer
    x = 111,364.85

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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.