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Finding the Fourth Proportional to 220,133.88, 303,767.55 and 129,493.26

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Solution

The fourth proportional to 220,133.88, 303,767.55 and 129,493.26 is: 178,690.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,133.88 : 303,767.55 = 129,493.26 : x
  2. Step 2: Convert to fraction form
    220,133.88/303,767.55 = 129,493.26/x
  3. Step 3: Cross multiply
    220,133.88x = 303,767.55 × 129,493.26
  4. Step 4: Simplify right side
    220,133.88x = 39,335,850,331.71
  5. Step 5: Solve for x
    x = 39,335,850,331.71/220,133.88
  6. Step 6: Final answer
    x = 178,690.58

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.