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Finding the Fourth Proportional to 290,450.80, 435,589.80 and 112,855.60

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Solution

The fourth proportional to 290,450.80, 435,589.80 and 112,855.60 is: 169,249.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,450.80 : 435,589.80 = 112,855.60 : x
  2. Step 2: Convert to fraction form
    290,450.80/435,589.80 = 112,855.60/x
  3. Step 3: Cross multiply
    290,450.80x = 435,589.80 × 112,855.60
  4. Step 4: Simplify right side
    290,450.80x = 49,158,748,232.88
  5. Step 5: Solve for x
    x = 49,158,748,232.88/290,450.80
  6. Step 6: Final answer
    x = 169,249.83

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1.5x scale

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.