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Finding the Fourth Proportional to 222,245, 306,700.26 and 121,645.16

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Solution

The fourth proportional to 222,245, 306,700.26 and 121,645.16 is: 167,871.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,245 : 306,700.26 = 121,645.16 : x
  2. Step 2: Convert to fraction form
    222,245/306,700.26 = 121,645.16/x
  3. Step 3: Cross multiply
    222,245x = 306,700.26 × 121,645.16
  4. Step 4: Simplify right side
    222,245x = 37,308,602,199.74
  5. Step 5: Solve for x
    x = 37,308,602,199.74/222,245
  6. Step 6: Final answer
    x = 167,871.50

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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.