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Finding the Fourth Proportional to 316,912.47, 437,339.21 and 173,675.82

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Solution

The fourth proportional to 316,912.47, 437,339.21 and 173,675.82 is: 239,672.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,912.47 : 437,339.21 = 173,675.82 : x
  2. Step 2: Convert to fraction form
    316,912.47/437,339.21 = 173,675.82/x
  3. Step 3: Cross multiply
    316,912.47x = 437,339.21 × 173,675.82
  4. Step 4: Simplify right side
    316,912.47x = 75,955,245,914.90
  5. Step 5: Solve for x
    x = 75,955,245,914.90/316,912.47
  6. Step 6: Final answer
    x = 239,672.63

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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.