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Finding the Fourth Proportional to 222,717.72, 306,938.40 and 158,189.88

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Solution

The fourth proportional to 222,717.72, 306,938.40 and 158,189.88 is: 218,009.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,717.72 : 306,938.40 = 158,189.88 : x
  2. Step 2: Convert to fraction form
    222,717.72/306,938.40 = 158,189.88/x
  3. Step 3: Cross multiply
    222,717.72x = 306,938.40 × 158,189.88
  4. Step 4: Simplify right side
    222,717.72x = 48,554,548,663.39
  5. Step 5: Solve for x
    x = 48,554,548,663.39/222,717.72
  6. Step 6: Final answer
    x = 218,009.36

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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.