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Finding the Fourth Proportional to 222,157.21, 306,569.32 and 126,694.63

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Solution

The fourth proportional to 222,157.21, 306,569.32 and 126,694.63 is: 174,834.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,157.21 : 306,569.32 = 126,694.63 : x
  2. Step 2: Convert to fraction form
    222,157.21/306,569.32 = 126,694.63/x
  3. Step 3: Cross multiply
    222,157.21x = 306,569.32 × 126,694.63
  4. Step 4: Simplify right side
    222,157.21x = 38,840,686,566.75
  5. Step 5: Solve for x
    x = 38,840,686,566.75/222,157.21
  6. Step 6: Final answer
    x = 174,834.24

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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.