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Finding the Fourth Proportional to 222,991.56, 307,740.74 and 126,200.40

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Solution

The fourth proportional to 222,991.56, 307,740.74 and 126,200.40 is: 174,163.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,991.56 : 307,740.74 = 126,200.40 : x
  2. Step 2: Convert to fraction form
    222,991.56/307,740.74 = 126,200.40/x
  3. Step 3: Cross multiply
    222,991.56x = 307,740.74 × 126,200.40
  4. Step 4: Simplify right side
    222,991.56x = 38,837,006,360.64
  5. Step 5: Solve for x
    x = 38,837,006,360.64/222,991.56
  6. Step 6: Final answer
    x = 174,163.57

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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.