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Finding the Fourth Proportional to 270,303.96, 405,513.18 and 80,779.08

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Solution

The fourth proportional to 270,303.96, 405,513.18 and 80,779.08 is: 121,185.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,303.96 : 405,513.18 = 80,779.08 : x
  2. Step 2: Convert to fraction form
    270,303.96/405,513.18 = 80,779.08/x
  3. Step 3: Cross multiply
    270,303.96x = 405,513.18 × 80,779.08
  4. Step 4: Simplify right side
    270,303.96x = 32,756,981,608.27
  5. Step 5: Solve for x
    x = 32,756,981,608.27/270,303.96
  6. Step 6: Final answer
    x = 121,185.73

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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.