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Finding the Fourth Proportional to 248,071.90, 342,310.71 and 140,620.54

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Solution

The fourth proportional to 248,071.90, 342,310.71 and 140,620.54 is: 194,040.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,071.90 : 342,310.71 = 140,620.54 : x
  2. Step 2: Convert to fraction form
    248,071.90/342,310.71 = 140,620.54/x
  3. Step 3: Cross multiply
    248,071.90x = 342,310.71 × 140,620.54
  4. Step 4: Simplify right side
    248,071.90x = 48,135,916,887.98
  5. Step 5: Solve for x
    x = 48,135,916,887.98/248,071.90
  6. Step 6: Final answer
    x = 194,040.18

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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.