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Finding the Fourth Proportional to 248,348.52, 342,721.80 and 135,171

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Solution

The fourth proportional to 248,348.52, 342,721.80 and 135,171 is: 186,536.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,348.52 : 342,721.80 = 135,171 : x
  2. Step 2: Convert to fraction form
    248,348.52/342,721.80 = 135,171/x
  3. Step 3: Cross multiply
    248,348.52x = 342,721.80 × 135,171
  4. Step 4: Simplify right side
    248,348.52x = 46,326,048,427.80
  5. Step 5: Solve for x
    x = 46,326,048,427.80/248,348.52
  6. Step 6: Final answer
    x = 186,536.44

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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.