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Finding the Fourth Proportional to 143,880.40, 215,836.80 and 44,039.80

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Solution

The fourth proportional to 143,880.40, 215,836.80 and 44,039.80 is: 66,064.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,880.40 : 215,836.80 = 44,039.80 : x
  2. Step 2: Convert to fraction form
    143,880.40/215,836.80 = 44,039.80/x
  3. Step 3: Cross multiply
    143,880.40x = 215,836.80 × 44,039.80
  4. Step 4: Simplify right side
    143,880.40x = 9,505,409,504.64
  5. Step 5: Solve for x
    x = 9,505,409,504.64/143,880.40
  6. Step 6: Final answer
    x = 66,064.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.