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Finding the Fourth Proportional to 248,540.51, 342,989.70 and 135,363.26

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Solution

The fourth proportional to 248,540.51, 342,989.70 and 135,363.26 is: 186,803.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,540.51 : 342,989.70 = 135,363.26 : x
  2. Step 2: Convert to fraction form
    248,540.51/342,989.70 = 135,363.26/x
  3. Step 3: Cross multiply
    248,540.51x = 342,989.70 × 135,363.26
  4. Step 4: Simplify right side
    248,540.51x = 46,428,203,938.42
  5. Step 5: Solve for x
    x = 46,428,203,938.42/248,540.51
  6. Step 6: Final answer
    x = 186,803.37

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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.