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Finding the Fourth Proportional to 248,368.88, 342,739.54 and 140,932.50

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Solution

The fourth proportional to 248,368.88, 342,739.54 and 140,932.50 is: 194,481.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,368.88 : 342,739.54 = 140,932.50 : x
  2. Step 2: Convert to fraction form
    248,368.88/342,739.54 = 140,932.50/x
  3. Step 3: Cross multiply
    248,368.88x = 342,739.54 × 140,932.50
  4. Step 4: Simplify right side
    248,368.88x = 48,303,140,221.05
  5. Step 5: Solve for x
    x = 48,303,140,221.05/248,368.88
  6. Step 6: Final answer
    x = 194,481.45

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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.