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Finding the Fourth Proportional to 262,379.22, 393,860.19 and 135,985.62

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Solution

The fourth proportional to 262,379.22, 393,860.19 and 135,985.62 is: 204,129.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,379.22 : 393,860.19 = 135,985.62 : x
  2. Step 2: Convert to fraction form
    262,379.22/393,860.19 = 135,985.62/x
  3. Step 3: Cross multiply
    262,379.22x = 393,860.19 × 135,985.62
  4. Step 4: Simplify right side
    262,379.22x = 53,559,322,130.47
  5. Step 5: Solve for x
    x = 53,559,322,130.47/262,379.22
  6. Step 6: Final answer
    x = 204,129.44

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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.