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Finding the Fourth Proportional to 307,375, 424,190.46 and 173,239

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Solution

The fourth proportional to 307,375, 424,190.46 and 173,239 is: 239,077.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,375 : 424,190.46 = 173,239 : x
  2. Step 2: Convert to fraction form
    307,375/424,190.46 = 173,239/x
  3. Step 3: Cross multiply
    307,375x = 424,190.46 × 173,239
  4. Step 4: Simplify right side
    307,375x = 73,486,331,099.94
  5. Step 5: Solve for x
    x = 73,486,331,099.94/307,375
  6. Step 6: Final answer
    x = 239,077.12

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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.