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Finding the Fourth Proportional to 223,786.31, 308,851.36 and 125,685.63

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Solution

The fourth proportional to 223,786.31, 308,851.36 and 125,685.63 is: 173,460.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,786.31 : 308,851.36 = 125,685.63 : x
  2. Step 2: Convert to fraction form
    223,786.31/308,851.36 = 125,685.63/x
  3. Step 3: Cross multiply
    223,786.31x = 308,851.36 × 125,685.63
  4. Step 4: Simplify right side
    223,786.31x = 38,818,177,443.74
  5. Step 5: Solve for x
    x = 38,818,177,443.74/223,786.31
  6. Step 6: Final answer
    x = 173,460.92

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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.