Home / 285,020.82-393,322.66-155,958.80

Finding the Fourth Proportional to 285,020.82, 393,322.66 and 155,958.80

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Solution

The fourth proportional to 285,020.82, 393,322.66 and 155,958.80 is: 215,219.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,020.82 : 393,322.66 = 155,958.80 : x
  2. Step 2: Convert to fraction form
    285,020.82/393,322.66 = 155,958.80/x
  3. Step 3: Cross multiply
    285,020.82x = 393,322.66 × 155,958.80
  4. Step 4: Simplify right side
    285,020.82x = 61,342,127,709.90
  5. Step 5: Solve for x
    x = 61,342,127,709.90/285,020.82
  6. Step 6: Final answer
    x = 215,219.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.