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Finding the Fourth Proportional to 248,272, 342,612.48 and 135,092.80

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Solution

The fourth proportional to 248,272, 342,612.48 and 135,092.80 is: 186,426.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,272 : 342,612.48 = 135,092.80 : x
  2. Step 2: Convert to fraction form
    248,272/342,612.48 = 135,092.80/x
  3. Step 3: Cross multiply
    248,272x = 342,612.48 × 135,092.80
  4. Step 4: Simplify right side
    248,272x = 46,284,479,238.14
  5. Step 5: Solve for x
    x = 46,284,479,238.14/248,272
  6. Step 6: Final answer
    x = 186,426.50

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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.