Home / 286,083.12-394,781.40-158,757.60

Finding the Fourth Proportional to 286,083.12, 394,781.40 and 158,757.60

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Solution

The fourth proportional to 286,083.12, 394,781.40 and 158,757.60 is: 219,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,083.12 : 394,781.40 = 158,757.60 : x
  2. Step 2: Convert to fraction form
    286,083.12/394,781.40 = 158,757.60/x
  3. Step 3: Cross multiply
    286,083.12x = 394,781.40 × 158,757.60
  4. Step 4: Simplify right side
    286,083.12x = 62,674,547,588.64
  5. Step 5: Solve for x
    x = 62,674,547,588.64/286,083.12
  6. Step 6: Final answer
    x = 219,078.10

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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.