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Finding the Fourth Proportional to 248,409, 342,804.42 and 135,225

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Solution

The fourth proportional to 248,409, 342,804.42 and 135,225 is: 186,610.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,409 : 342,804.42 = 135,225 : x
  2. Step 2: Convert to fraction form
    248,409/342,804.42 = 135,225/x
  3. Step 3: Cross multiply
    248,409x = 342,804.42 × 135,225
  4. Step 4: Simplify right side
    248,409x = 46,355,727,694.50
  5. Step 5: Solve for x
    x = 46,355,727,694.50/248,409
  6. Step 6: Final answer
    x = 186,610.50

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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.