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Finding the Fourth Proportional to 290,245.68, 435,286.08 and 112,714.80

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Solution

The fourth proportional to 290,245.68, 435,286.08 and 112,714.80 is: 169,040.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,245.68 : 435,286.08 = 112,714.80 : x
  2. Step 2: Convert to fraction form
    290,245.68/435,286.08 = 112,714.80/x
  3. Step 3: Cross multiply
    290,245.68x = 435,286.08 × 112,714.80
  4. Step 4: Simplify right side
    290,245.68x = 49,063,183,449.98
  5. Step 5: Solve for x
    x = 49,063,183,449.98/290,245.68
  6. Step 6: Final answer
    x = 169,040.19

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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.