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Finding the Fourth Proportional to 248,901.89, 343,483.97 and 135,724.64

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Solution

The fourth proportional to 248,901.89, 343,483.97 and 135,724.64 is: 187,299.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,901.89 : 343,483.97 = 135,724.64 : x
  2. Step 2: Convert to fraction form
    248,901.89/343,483.97 = 135,724.64/x
  3. Step 3: Cross multiply
    248,901.89x = 343,483.97 × 135,724.64
  4. Step 4: Simplify right side
    248,901.89x = 46,619,239,372.04
  5. Step 5: Solve for x
    x = 46,619,239,372.04/248,901.89
  6. Step 6: Final answer
    x = 187,299.66

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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.