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Finding the Fourth Proportional to 222,078.06, 306,470.13 and 121,476.06

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Solution

The fourth proportional to 222,078.06, 306,470.13 and 121,476.06 is: 167,638.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,078.06 : 306,470.13 = 121,476.06 : x
  2. Step 2: Convert to fraction form
    222,078.06/306,470.13 = 121,476.06/x
  3. Step 3: Cross multiply
    222,078.06x = 306,470.13 × 121,476.06
  4. Step 4: Simplify right side
    222,078.06x = 37,228,783,900.09
  5. Step 5: Solve for x
    x = 37,228,783,900.09/222,078.06
  6. Step 6: Final answer
    x = 167,638.28

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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.