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Finding the Fourth Proportional to 262,741.42, 394,169.64 and 85,266.28

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Solution

The fourth proportional to 262,741.42, 394,169.64 and 85,266.28 is: 127,918.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,741.42 : 394,169.64 = 85,266.28 : x
  2. Step 2: Convert to fraction form
    262,741.42/394,169.64 = 85,266.28/x
  3. Step 3: Cross multiply
    262,741.42x = 394,169.64 × 85,266.28
  4. Step 4: Simplify right side
    262,741.42x = 33,609,378,891.74
  5. Step 5: Solve for x
    x = 33,609,378,891.74/262,741.42
  6. Step 6: Final answer
    x = 127,918.08

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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.