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Finding the Fourth Proportional to 248,323.86, 342,688.44 and 135,147.78

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Solution

The fourth proportional to 248,323.86, 342,688.44 and 135,147.78 is: 186,504.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,323.86 : 342,688.44 = 135,147.78 : x
  2. Step 2: Convert to fraction form
    248,323.86/342,688.44 = 135,147.78/x
  3. Step 3: Cross multiply
    248,323.86x = 342,688.44 × 135,147.78
  4. Step 4: Simplify right side
    248,323.86x = 46,313,581,897.66
  5. Step 5: Solve for x
    x = 46,313,581,897.66/248,323.86
  6. Step 6: Final answer
    x = 186,504.76

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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.