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Finding the Fourth Proportional to 303,405.69, 455,157.74 and 113,880.88

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Solution

The fourth proportional to 303,405.69, 455,157.74 and 113,880.88 is: 170,839.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,405.69 : 455,157.74 = 113,880.88 : x
  2. Step 2: Convert to fraction form
    303,405.69/455,157.74 = 113,880.88/x
  3. Step 3: Cross multiply
    303,405.69x = 455,157.74 × 113,880.88
  4. Step 4: Simplify right side
    303,405.69x = 51,833,763,116.82
  5. Step 5: Solve for x
    x = 51,833,763,116.82/303,405.69
  6. Step 6: Final answer
    x = 170,839.79

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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.