Home / 217,986.61-300,849.71-122,493.31

Finding the Fourth Proportional to 217,986.61, 300,849.71 and 122,493.31

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Solution

The fourth proportional to 217,986.61, 300,849.71 and 122,493.31 is: 169,056.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,986.61 : 300,849.71 = 122,493.31 : x
  2. Step 2: Convert to fraction form
    217,986.61/300,849.71 = 122,493.31/x
  3. Step 3: Cross multiply
    217,986.61x = 300,849.71 × 122,493.31
  4. Step 4: Simplify right side
    217,986.61x = 36,852,077,807.15
  5. Step 5: Solve for x
    x = 36,852,077,807.15/217,986.61
  6. Step 6: Final answer
    x = 169,056.61

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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.