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Finding the Fourth Proportional to 210,686.44, 290,745.30 and 115,192.12

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Solution

The fourth proportional to 210,686.44, 290,745.30 and 115,192.12 is: 158,964.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,686.44 : 290,745.30 = 115,192.12 : x
  2. Step 2: Convert to fraction form
    210,686.44/290,745.30 = 115,192.12/x
  3. Step 3: Cross multiply
    210,686.44x = 290,745.30 × 115,192.12
  4. Step 4: Simplify right side
    210,686.44x = 33,491,567,487.04
  5. Step 5: Solve for x
    x = 33,491,567,487.04/210,686.44
  6. Step 6: Final answer
    x = 158,964.04

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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.