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Finding the Fourth Proportional to 251,781.55, 347,447.68 and 137,060.37

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Solution

The fourth proportional to 251,781.55, 347,447.68 and 137,060.37 is: 189,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,781.55 : 347,447.68 = 137,060.37 : x
  2. Step 2: Convert to fraction form
    251,781.55/347,447.68 = 137,060.37/x
  3. Step 3: Cross multiply
    251,781.55x = 347,447.68 × 137,060.37
  4. Step 4: Simplify right side
    251,781.55x = 47,621,307,233.79
  5. Step 5: Solve for x
    x = 47,621,307,233.79/251,781.55
  6. Step 6: Final answer
    x = 189,137.40

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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.