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Finding the Fourth Proportional to 210,324.96, 290,236.08 and 120,900.96

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Solution

The fourth proportional to 210,324.96, 290,236.08 and 120,900.96 is: 166,836.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,324.96 : 290,236.08 = 120,900.96 : x
  2. Step 2: Convert to fraction form
    210,324.96/290,236.08 = 120,900.96/x
  3. Step 3: Cross multiply
    210,324.96x = 290,236.08 × 120,900.96
  4. Step 4: Simplify right side
    210,324.96x = 35,089,820,698.64
  5. Step 5: Solve for x
    x = 35,089,820,698.64/210,324.96
  6. Step 6: Final answer
    x = 166,836.22

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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.