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Finding the Fourth Proportional to 290,813.85, 436,042.17 and 113,113.76

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Solution

The fourth proportional to 290,813.85, 436,042.17 and 113,113.76 is: 169,601.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,813.85 : 436,042.17 = 113,113.76 : x
  2. Step 2: Convert to fraction form
    290,813.85/436,042.17 = 113,113.76/x
  3. Step 3: Cross multiply
    290,813.85x = 436,042.17 × 113,113.76
  4. Step 4: Simplify right side
    290,813.85x = 49,322,367,187.05
  5. Step 5: Solve for x
    x = 49,322,367,187.05/290,813.85
  6. Step 6: Final answer
    x = 169,601.16

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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.