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Finding the Fourth Proportional to 234,735.93, 323,905.87 and 139,223.97

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Solution

The fourth proportional to 234,735.93, 323,905.87 and 139,223.97 is: 192,111.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,735.93 : 323,905.87 = 139,223.97 : x
  2. Step 2: Convert to fraction form
    234,735.93/323,905.87 = 139,223.97/x
  3. Step 3: Cross multiply
    234,735.93x = 323,905.87 × 139,223.97
  4. Step 4: Simplify right side
    234,735.93x = 45,095,459,508.17
  5. Step 5: Solve for x
    x = 45,095,459,508.17/234,735.93
  6. Step 6: Final answer
    x = 192,111.45

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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.