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Finding the Fourth Proportional to 309,059.73, 426,512.93 and 173,099.41

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Solution

The fourth proportional to 309,059.73, 426,512.93 and 173,099.41 is: 238,883.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,059.73 : 426,512.93 = 173,099.41 : x
  2. Step 2: Convert to fraction form
    309,059.73/426,512.93 = 173,099.41/x
  3. Step 3: Cross multiply
    309,059.73x = 426,512.93 × 173,099.41
  4. Step 4: Simplify right side
    309,059.73x = 73,829,134,608.59
  5. Step 5: Solve for x
    x = 73,829,134,608.59/309,059.73
  6. Step 6: Final answer
    x = 238,883.06

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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.