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Finding the Fourth Proportional to 290,838.60, 435,933.90 and 113,286.60

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Solution

The fourth proportional to 290,838.60, 435,933.90 and 113,286.60 is: 169,803.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,838.60 : 435,933.90 = 113,286.60 : x
  2. Step 2: Convert to fraction form
    290,838.60/435,933.90 = 113,286.60/x
  3. Step 3: Cross multiply
    290,838.60x = 435,933.90 × 113,286.60
  4. Step 4: Simplify right side
    290,838.60x = 49,385,469,355.74
  5. Step 5: Solve for x
    x = 49,385,469,355.74/290,838.60
  6. Step 6: Final answer
    x = 169,803.70

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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.