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Finding the Fourth Proportional to 245,726.63, 338,972.69 and 169,112.72

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Solution

The fourth proportional to 245,726.63, 338,972.69 and 169,112.72 is: 233,286.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,726.63 : 338,972.69 = 169,112.72 : x
  2. Step 2: Convert to fraction form
    245,726.63/338,972.69 = 169,112.72/x
  3. Step 3: Cross multiply
    245,726.63x = 338,972.69 × 169,112.72
  4. Step 4: Simplify right side
    245,726.63x = 57,324,591,071.19
  5. Step 5: Solve for x
    x = 57,324,591,071.19/245,726.63
  6. Step 6: Final answer
    x = 233,286.03

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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.