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Finding the Fourth Proportional to 303,740.56, 455,647.32 and 126,367.60

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Solution

The fourth proportional to 303,740.56, 455,647.32 and 126,367.60 is: 189,566.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,740.56 : 455,647.32 = 126,367.60 : x
  2. Step 2: Convert to fraction form
    303,740.56/455,647.32 = 126,367.60/x
  3. Step 3: Cross multiply
    303,740.56x = 455,647.32 × 126,367.60
  4. Step 4: Simplify right side
    303,740.56x = 57,579,058,274.83
  5. Step 5: Solve for x
    x = 57,579,058,274.83/303,740.56
  6. Step 6: Final answer
    x = 189,566.58

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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.