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Finding the Fourth Proportional to 291,383.86, 436,734.75 and 111,351.40

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Solution

The fourth proportional to 291,383.86, 436,734.75 and 111,351.40 is: 166,896.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,383.86 : 436,734.75 = 111,351.40 : x
  2. Step 2: Convert to fraction form
    291,383.86/436,734.75 = 111,351.40/x
  3. Step 3: Cross multiply
    291,383.86x = 436,734.75 × 111,351.40
  4. Step 4: Simplify right side
    291,383.86x = 48,631,025,841.15
  5. Step 5: Solve for x
    x = 48,631,025,841.15/291,383.86
  6. Step 6: Final answer
    x = 166,896.77

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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.