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Finding the Fourth Proportional to 251,903.60, 347,611.21 and 138,726.35

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Solution

The fourth proportional to 251,903.60, 347,611.21 and 138,726.35 is: 191,433.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,903.60 : 347,611.21 = 138,726.35 : x
  2. Step 2: Convert to fraction form
    251,903.60/347,611.21 = 138,726.35/x
  3. Step 3: Cross multiply
    251,903.60x = 347,611.21 × 138,726.35
  4. Step 4: Simplify right side
    251,903.60x = 48,222,834,121.28
  5. Step 5: Solve for x
    x = 48,222,834,121.28/251,903.60
  6. Step 6: Final answer
    x = 191,433.68

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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.