Home / 210,512.16-290,503.39-115,016.80

Finding the Fourth Proportional to 210,512.16, 290,503.39 and 115,016.80

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Solution

The fourth proportional to 210,512.16, 290,503.39 and 115,016.80 is: 158,721.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,512.16 : 290,503.39 = 115,016.80 : x
  2. Step 2: Convert to fraction form
    210,512.16/290,503.39 = 115,016.80/x
  3. Step 3: Cross multiply
    210,512.16x = 290,503.39 × 115,016.80
  4. Step 4: Simplify right side
    210,512.16x = 33,412,770,306.95
  5. Step 5: Solve for x
    x = 33,412,770,306.95/210,512.16
  6. Step 6: Final answer
    x = 158,721.33

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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.