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Finding the Fourth Proportional to 290,626.60, 435,615.90 and 113,074.60

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Solution

The fourth proportional to 290,626.60, 435,615.90 and 113,074.60 is: 169,485.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,626.60 : 435,615.90 = 113,074.60 : x
  2. Step 2: Convert to fraction form
    290,626.60/435,615.90 = 113,074.60/x
  3. Step 3: Cross multiply
    290,626.60x = 435,615.90 × 113,074.60
  4. Step 4: Simplify right side
    290,626.60x = 49,257,093,646.14
  5. Step 5: Solve for x
    x = 49,257,093,646.14/290,626.60
  6. Step 6: Final answer
    x = 169,485.84

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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.