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Finding the Fourth Proportional to 251,611, 347,226.42 and 138,431.32

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Solution

The fourth proportional to 251,611, 347,226.42 and 138,431.32 is: 191,037.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,611 : 347,226.42 = 138,431.32 : x
  2. Step 2: Convert to fraction form
    251,611/347,226.42 = 138,431.32/x
  3. Step 3: Cross multiply
    251,611x = 347,226.42 × 138,431.32
  4. Step 4: Simplify right side
    251,611x = 48,067,011,659.47
  5. Step 5: Solve for x
    x = 48,067,011,659.47/251,611
  6. Step 6: Final answer
    x = 191,037.00

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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.