Home / 220,824.23-331,055.31-78,588.51

Finding the Fourth Proportional to 220,824.23, 331,055.31 and 78,588.51

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Solution

The fourth proportional to 220,824.23, 331,055.31 and 78,588.51 is: 117,818.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,824.23 : 331,055.31 = 78,588.51 : x
  2. Step 2: Convert to fraction form
    220,824.23/331,055.31 = 78,588.51/x
  3. Step 3: Cross multiply
    220,824.23x = 331,055.31 × 78,588.51
  4. Step 4: Simplify right side
    220,824.23x = 26,017,143,540.49
  5. Step 5: Solve for x
    x = 26,017,143,540.49/220,824.23
  6. Step 6: Final answer
    x = 117,818.34

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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.