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Finding the Fourth Proportional to 248,071.65, 342,310.37 and 140,620.29

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Solution

The fourth proportional to 248,071.65, 342,310.37 and 140,620.29 is: 194,039.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,071.65 : 342,310.37 = 140,620.29 : x
  2. Step 2: Convert to fraction form
    248,071.65/342,310.37 = 140,620.29/x
  3. Step 3: Cross multiply
    248,071.65x = 342,310.37 × 140,620.29
  4. Step 4: Simplify right side
    248,071.65x = 48,135,782,796.31
  5. Step 5: Solve for x
    x = 48,135,782,796.31/248,071.65
  6. Step 6: Final answer
    x = 194,039.84

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1.5x scale

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.