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Finding the Fourth Proportional to 223,325.44, 308,186.80 and 122,721.28

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Solution

The fourth proportional to 223,325.44, 308,186.80 and 122,721.28 is: 169,354.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,325.44 : 308,186.80 = 122,721.28 : x
  2. Step 2: Convert to fraction form
    223,325.44/308,186.80 = 122,721.28/x
  3. Step 3: Cross multiply
    223,325.44x = 308,186.80 × 122,721.28
  4. Step 4: Simplify right side
    223,325.44x = 37,821,078,575.10
  5. Step 5: Solve for x
    x = 37,821,078,575.10/223,325.44
  6. Step 6: Final answer
    x = 169,354.10

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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.