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Finding the Fourth Proportional to 248,548.71, 343,001.21 and 135,371.46

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Solution

The fourth proportional to 248,548.71, 343,001.21 and 135,371.46 is: 186,814.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,548.71 : 343,001.21 = 135,371.46 : x
  2. Step 2: Convert to fraction form
    248,548.71/343,001.21 = 135,371.46/x
  3. Step 3: Cross multiply
    248,548.71x = 343,001.21 × 135,371.46
  4. Step 4: Simplify right side
    248,548.71x = 46,432,573,902.61
  5. Step 5: Solve for x
    x = 46,432,573,902.61/248,548.71
  6. Step 6: Final answer
    x = 186,814.79

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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.