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Finding the Fourth Proportional to 251,311.89, 346,810.38 and 138,134.64

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Solution

The fourth proportional to 251,311.89, 346,810.38 and 138,134.64 is: 190,625.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,311.89 : 346,810.38 = 138,134.64 : x
  2. Step 2: Convert to fraction form
    251,311.89/346,810.38 = 138,134.64/x
  3. Step 3: Cross multiply
    251,311.89x = 346,810.38 × 138,134.64
  4. Step 4: Simplify right side
    251,311.89x = 47,906,526,989.56
  5. Step 5: Solve for x
    x = 47,906,526,989.56/251,311.89
  6. Step 6: Final answer
    x = 190,625.79

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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.