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Finding the Fourth Proportional to 254,687.40, 351,478.44 and 139,975.80

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Solution

The fourth proportional to 254,687.40, 351,478.44 and 139,975.80 is: 193,172.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,687.40 : 351,478.44 = 139,975.80 : x
  2. Step 2: Convert to fraction form
    254,687.40/351,478.44 = 139,975.80/x
  3. Step 3: Cross multiply
    254,687.40x = 351,478.44 × 139,975.80
  4. Step 4: Simplify right side
    254,687.40x = 49,198,475,821.75
  5. Step 5: Solve for x
    x = 49,198,475,821.75/254,687.40
  6. Step 6: Final answer
    x = 193,172.01

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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.