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Finding the Fourth Proportional to 307,072.60, 423,749.40 and 171,099.52

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Solution

The fourth proportional to 307,072.60, 423,749.40 and 171,099.52 is: 236,111.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,072.60 : 423,749.40 = 171,099.52 : x
  2. Step 2: Convert to fraction form
    307,072.60/423,749.40 = 171,099.52/x
  3. Step 3: Cross multiply
    307,072.60x = 423,749.40 × 171,099.52
  4. Step 4: Simplify right side
    307,072.60x = 72,503,318,940.29
  5. Step 5: Solve for x
    x = 72,503,318,940.29/307,072.60
  6. Step 6: Final answer
    x = 236,111.33

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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.