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Finding the Fourth Proportional to 251,497.26, 347,060.46 and 138,321.90

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Solution

The fourth proportional to 251,497.26, 347,060.46 and 138,321.90 is: 190,881.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,497.26 : 347,060.46 = 138,321.90 : x
  2. Step 2: Convert to fraction form
    251,497.26/347,060.46 = 138,321.90/x
  3. Step 3: Cross multiply
    251,497.26x = 347,060.46 × 138,321.90
  4. Step 4: Simplify right side
    251,497.26x = 48,006,062,242.07
  5. Step 5: Solve for x
    x = 48,006,062,242.07/251,497.26
  6. Step 6: Final answer
    x = 190,881.05

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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.