Home / 221,016.51-331,622.78-115,810.47

Finding the Fourth Proportional to 221,016.51, 331,622.78 and 115,810.47

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Solution

The fourth proportional to 221,016.51, 331,622.78 and 115,810.47 is: 173,767.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,016.51 : 331,622.78 = 115,810.47 : x
  2. Step 2: Convert to fraction form
    221,016.51/331,622.78 = 115,810.47/x
  3. Step 3: Cross multiply
    221,016.51x = 331,622.78 × 115,810.47
  4. Step 4: Simplify right side
    221,016.51x = 38,405,390,014.51
  5. Step 5: Solve for x
    x = 38,405,390,014.51/221,016.51
  6. Step 6: Final answer
    x = 173,767.06

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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.