Home / 210,512.78-290,504.24-115,017.42

Finding the Fourth Proportional to 210,512.78, 290,504.24 and 115,017.42

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Solution

The fourth proportional to 210,512.78, 290,504.24 and 115,017.42 is: 158,722.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,512.78 : 290,504.24 = 115,017.42 : x
  2. Step 2: Convert to fraction form
    210,512.78/290,504.24 = 115,017.42/x
  3. Step 3: Cross multiply
    210,512.78x = 290,504.24 × 115,017.42
  4. Step 4: Simplify right side
    210,512.78x = 33,413,048,183.86
  5. Step 5: Solve for x
    x = 33,413,048,183.86/210,512.78
  6. Step 6: Final answer
    x = 158,722.18

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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.