Home / 239,914.51-331,189.78-158,290.80

Finding the Fourth Proportional to 239,914.51, 331,189.78 and 158,290.80

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Solution

The fourth proportional to 239,914.51, 331,189.78 and 158,290.80 is: 218,512.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,914.51 : 331,189.78 = 158,290.80 : x
  2. Step 2: Convert to fraction form
    239,914.51/331,189.78 = 158,290.80/x
  3. Step 3: Cross multiply
    239,914.51x = 331,189.78 × 158,290.80
  4. Step 4: Simplify right side
    239,914.51x = 52,424,296,625.47
  5. Step 5: Solve for x
    x = 52,424,296,625.47/239,914.51
  6. Step 6: Final answer
    x = 218,512.40

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1.5x scale

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.