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Finding the Fourth Proportional to 270,536.68, 405,863.34 and 81,012.07

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Solution

The fourth proportional to 270,536.68, 405,863.34 and 81,012.07 is: 121,535.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,536.68 : 405,863.34 = 81,012.07 : x
  2. Step 2: Convert to fraction form
    270,536.68/405,863.34 = 81,012.07/x
  3. Step 3: Cross multiply
    270,536.68x = 405,863.34 × 81,012.07
  4. Step 4: Simplify right side
    270,536.68x = 32,879,829,310.51
  5. Step 5: Solve for x
    x = 32,879,829,310.51/270,536.68
  6. Step 6: Final answer
    x = 121,535.57

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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.