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Finding the Fourth Proportional to 251,484.56, 347,055.96 and 138,314.60

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Solution

The fourth proportional to 251,484.56, 347,055.96 and 138,314.60 is: 190,878.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,484.56 : 347,055.96 = 138,314.60 : x
  2. Step 2: Convert to fraction form
    251,484.56/347,055.96 = 138,314.60/x
  3. Step 3: Cross multiply
    251,484.56x = 347,055.96 × 138,314.60
  4. Step 4: Simplify right side
    251,484.56x = 48,002,906,285.02
  5. Step 5: Solve for x
    x = 48,002,906,285.02/251,484.56
  6. Step 6: Final answer
    x = 190,878.14

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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.