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Finding the Fourth Proportional to 251,969.85, 347,718.42 and 138,792.60

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Solution

The fourth proportional to 251,969.85, 347,718.42 and 138,792.60 is: 191,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,969.85 : 347,718.42 = 138,792.60 : x
  2. Step 2: Convert to fraction form
    251,969.85/347,718.42 = 138,792.60/x
  3. Step 3: Cross multiply
    251,969.85x = 347,718.42 × 138,792.60
  4. Step 4: Simplify right side
    251,969.85x = 48,260,743,579.69
  5. Step 5: Solve for x
    x = 48,260,743,579.69/251,969.85
  6. Step 6: Final answer
    x = 191,533.80

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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.