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Finding the Fourth Proportional to 222,115, 306,523.14 and 121,515.16

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Solution

The fourth proportional to 222,115, 306,523.14 and 121,515.16 is: 167,693.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,115 : 306,523.14 = 121,515.16 : x
  2. Step 2: Convert to fraction form
    222,115/306,523.14 = 121,515.16/x
  3. Step 3: Cross multiply
    222,115x = 306,523.14 × 121,515.16
  4. Step 4: Simplify right side
    222,115x = 37,247,208,400.80
  5. Step 5: Solve for x
    x = 37,247,208,400.80/222,115
  6. Step 6: Final answer
    x = 167,693.35

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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.