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Finding the Fourth Proportional to 210,595, 290,620.56 and 115,102.36

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Solution

The fourth proportional to 210,595, 290,620.56 and 115,102.36 is: 158,840.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,595 : 290,620.56 = 115,102.36 : x
  2. Step 2: Convert to fraction form
    210,595/290,620.56 = 115,102.36/x
  3. Step 3: Cross multiply
    210,595x = 290,620.56 × 115,102.36
  4. Step 4: Simplify right side
    210,595x = 33,451,112,320.52
  5. Step 5: Solve for x
    x = 33,451,112,320.52/210,595
  6. Step 6: Final answer
    x = 158,840.96

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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.