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Finding the Fourth Proportional to 248,361.38, 342,729.19 and 140,925

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Solution

The fourth proportional to 248,361.38, 342,729.19 and 140,925 is: 194,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,361.38 : 342,729.19 = 140,925 : x
  2. Step 2: Convert to fraction form
    248,361.38/342,729.19 = 140,925/x
  3. Step 3: Cross multiply
    248,361.38x = 342,729.19 × 140,925
  4. Step 4: Simplify right side
    248,361.38x = 48,299,111,100.75
  5. Step 5: Solve for x
    x = 48,299,111,100.75/248,361.38
  6. Step 6: Final answer
    x = 194,471.10

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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.