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Finding the Fourth Proportional to 229,871.70, 317,216.88 and 127,891.98

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Solution

The fourth proportional to 229,871.70, 317,216.88 and 127,891.98 is: 176,487.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,871.70 : 317,216.88 = 127,891.98 : x
  2. Step 2: Convert to fraction form
    229,871.70/317,216.88 = 127,891.98/x
  3. Step 3: Cross multiply
    229,871.70x = 317,216.88 × 127,891.98
  4. Step 4: Simplify right side
    229,871.70x = 40,569,494,872.62
  5. Step 5: Solve for x
    x = 40,569,494,872.62/229,871.70
  6. Step 6: Final answer
    x = 176,487.56

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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.