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Finding the Fourth Proportional to 251,938, 347,674.44 and 138,760.75

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Solution

The fourth proportional to 251,938, 347,674.44 and 138,760.75 is: 191,489.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,938 : 347,674.44 = 138,760.75 : x
  2. Step 2: Convert to fraction form
    251,938/347,674.44 = 138,760.75/x
  3. Step 3: Cross multiply
    251,938x = 347,674.44 × 138,760.75
  4. Step 4: Simplify right side
    251,938x = 48,243,566,050.23
  5. Step 5: Solve for x
    x = 48,243,566,050.23/251,938
  6. Step 6: Final answer
    x = 191,489.84

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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.