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Finding the Fourth Proportional to 229,318.46, 316,453.43 and 127,340.78

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Solution

The fourth proportional to 229,318.46, 316,453.43 and 127,340.78 is: 175,726.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,318.46 : 316,453.43 = 127,340.78 : x
  2. Step 2: Convert to fraction form
    229,318.46/316,453.43 = 127,340.78/x
  3. Step 3: Cross multiply
    229,318.46x = 316,453.43 × 127,340.78
  4. Step 4: Simplify right side
    229,318.46x = 40,297,426,609.88
  5. Step 5: Solve for x
    x = 40,297,426,609.88/229,318.46
  6. Step 6: Final answer
    x = 175,726.92

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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.