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Finding the Fourth Proportional to 234,644.28, 351,980.11 and 90,550.86

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Solution

The fourth proportional to 234,644.28, 351,980.11 and 90,550.86 is: 135,831.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,644.28 : 351,980.11 = 90,550.86 : x
  2. Step 2: Convert to fraction form
    234,644.28/351,980.11 = 90,550.86/x
  3. Step 3: Cross multiply
    234,644.28x = 351,980.11 × 90,550.86
  4. Step 4: Simplify right side
    234,644.28x = 31,872,101,663.39
  5. Step 5: Solve for x
    x = 31,872,101,663.39/234,644.28
  6. Step 6: Final answer
    x = 135,831.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.