Home / 285,315.42-393,735.25-157,991.03

Finding the Fourth Proportional to 285,315.42, 393,735.25 and 157,991.03

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Solution

The fourth proportional to 285,315.42, 393,735.25 and 157,991.03 is: 218,027.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,315.42 : 393,735.25 = 157,991.03 : x
  2. Step 2: Convert to fraction form
    285,315.42/393,735.25 = 157,991.03/x
  3. Step 3: Cross multiply
    285,315.42x = 393,735.25 × 157,991.03
  4. Step 4: Simplify right side
    285,315.42x = 62,206,637,694.81
  5. Step 5: Solve for x
    x = 62,206,637,694.81/285,315.42
  6. Step 6: Final answer
    x = 218,027.61

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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.