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Finding the Fourth Proportional to 210,616.76, 290,846.22 and 135,297.56

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Solution

The fourth proportional to 210,616.76, 290,846.22 and 135,297.56 is: 186,835.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,616.76 : 290,846.22 = 135,297.56 : x
  2. Step 2: Convert to fraction form
    210,616.76/290,846.22 = 135,297.56/x
  3. Step 3: Cross multiply
    210,616.76x = 290,846.22 × 135,297.56
  4. Step 4: Simplify right side
    210,616.76x = 39,350,783,901.22
  5. Step 5: Solve for x
    x = 39,350,783,901.22/210,616.76
  6. Step 6: Final answer
    x = 186,835.96

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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.