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Finding the Fourth Proportional to 223,257, 308,094.78 and 122,661.48

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Solution

The fourth proportional to 223,257, 308,094.78 and 122,661.48 is: 169,272.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,257 : 308,094.78 = 122,661.48 : x
  2. Step 2: Convert to fraction form
    223,257/308,094.78 = 122,661.48/x
  3. Step 3: Cross multiply
    223,257x = 308,094.78 × 122,661.48
  4. Step 4: Simplify right side
    223,257x = 37,791,361,695.07
  5. Step 5: Solve for x
    x = 37,791,361,695.07/223,257
  6. Step 6: Final answer
    x = 169,272.91

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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.