Home / 285,845.68-394,464.35-156,781.51

Finding the Fourth Proportional to 285,845.68, 394,464.35 and 156,781.51

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Solution

The fourth proportional to 285,845.68, 394,464.35 and 156,781.51 is: 216,357.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,845.68 : 394,464.35 = 156,781.51 : x
  2. Step 2: Convert to fraction form
    285,845.68/394,464.35 = 156,781.51/x
  3. Step 3: Cross multiply
    285,845.68x = 394,464.35 × 156,781.51
  4. Step 4: Simplify right side
    285,845.68x = 61,844,714,958.07
  5. Step 5: Solve for x
    x = 61,844,714,958.07/285,845.68
  6. Step 6: Final answer
    x = 216,357.01

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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.