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Finding the Fourth Proportional to 248,471.88, 342,889.74 and 135,294.36

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Solution

The fourth proportional to 248,471.88, 342,889.74 and 135,294.36 is: 186,705.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,471.88 : 342,889.74 = 135,294.36 : x
  2. Step 2: Convert to fraction form
    248,471.88/342,889.74 = 135,294.36/x
  3. Step 3: Cross multiply
    248,471.88x = 342,889.74 × 135,294.36
  4. Step 4: Simplify right side
    248,471.88x = 46,391,047,923.87
  5. Step 5: Solve for x
    x = 46,391,047,923.87/248,471.88
  6. Step 6: Final answer
    x = 186,705.42

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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.