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Finding the Fourth Proportional to 290,310.96, 435,609.11 and 130,499.80

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Solution

The fourth proportional to 290,310.96, 435,609.11 and 130,499.80 is: 195,813.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,310.96 : 435,609.11 = 130,499.80 : x
  2. Step 2: Convert to fraction form
    290,310.96/435,609.11 = 130,499.80/x
  3. Step 3: Cross multiply
    290,310.96x = 435,609.11 × 130,499.80
  4. Step 4: Simplify right side
    290,310.96x = 56,846,901,733.18
  5. Step 5: Solve for x
    x = 56,846,901,733.18/290,310.96
  6. Step 6: Final answer
    x = 195,813.83

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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.