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Finding the Fourth Proportional to 234,765.66, 323,967.87 and 139,215.18

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Solution

The fourth proportional to 234,765.66, 323,967.87 and 139,215.18 is: 192,111.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,765.66 : 323,967.87 = 139,215.18 : x
  2. Step 2: Convert to fraction form
    234,765.66/323,967.87 = 139,215.18/x
  3. Step 3: Cross multiply
    234,765.66x = 323,967.87 × 139,215.18
  4. Step 4: Simplify right side
    234,765.66x = 45,101,245,336.27
  5. Step 5: Solve for x
    x = 45,101,245,336.27/234,765.66
  6. Step 6: Final answer
    x = 192,111.77

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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.