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Finding the Fourth Proportional to 210,630.96, 290,822.94 and 130,168.80

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Solution

The fourth proportional to 210,630.96, 290,822.94 and 130,168.80 is: 179,727.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,630.96 : 290,822.94 = 130,168.80 : x
  2. Step 2: Convert to fraction form
    210,630.96/290,822.94 = 130,168.80/x
  3. Step 3: Cross multiply
    210,630.96x = 290,822.94 × 130,168.80
  4. Step 4: Simplify right side
    210,630.96x = 37,856,073,112.27
  5. Step 5: Solve for x
    x = 37,856,073,112.27/210,630.96
  6. Step 6: Final answer
    x = 179,727.01

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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.