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Finding the Fourth Proportional to 222,117, 306,521.54 and 121,517.16

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Solution

The fourth proportional to 222,117, 306,521.54 and 121,517.16 is: 167,693.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,117 : 306,521.54 = 121,517.16 : x
  2. Step 2: Convert to fraction form
    222,117/306,521.54 = 121,517.16/x
  3. Step 3: Cross multiply
    222,117x = 306,521.54 × 121,517.16
  4. Step 4: Simplify right side
    222,117x = 37,247,627,019.63
  5. Step 5: Solve for x
    x = 37,247,627,019.63/222,117
  6. Step 6: Final answer
    x = 167,693.72

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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.