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Finding the Fourth Proportional to 210,525.78, 290,524.86 and 115,033.26

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Solution

The fourth proportional to 210,525.78, 290,524.86 and 115,033.26 is: 158,745.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,525.78 : 290,524.86 = 115,033.26 : x
  2. Step 2: Convert to fraction form
    210,525.78/290,524.86 = 115,033.26/x
  3. Step 3: Cross multiply
    210,525.78x = 290,524.86 × 115,033.26
  4. Step 4: Simplify right side
    210,525.78x = 33,420,021,756.84
  5. Step 5: Solve for x
    x = 33,420,021,756.84/210,525.78
  6. Step 6: Final answer
    x = 158,745.51

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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.