Home / 213,212.79-319,817.62-86,823.33

Finding the Fourth Proportional to 213,212.79, 319,817.62 and 86,823.33

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Solution

The fourth proportional to 213,212.79, 319,817.62 and 86,823.33 is: 130,234.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,212.79 : 319,817.62 = 86,823.33 : x
  2. Step 2: Convert to fraction form
    213,212.79/319,817.62 = 86,823.33/x
  3. Step 3: Cross multiply
    213,212.79x = 319,817.62 × 86,823.33
  4. Step 4: Simplify right side
    213,212.79x = 27,767,629,181.91
  5. Step 5: Solve for x
    x = 27,767,629,181.91/213,212.79
  6. Step 6: Final answer
    x = 130,234.35

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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.