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Finding the Fourth Proportional to 303,456.85, 455,185.28 and 145,604.05

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Solution

The fourth proportional to 303,456.85, 455,185.28 and 145,604.05 is: 218,406.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,456.85 : 455,185.28 = 145,604.05 : x
  2. Step 2: Convert to fraction form
    303,456.85/455,185.28 = 145,604.05/x
  3. Step 3: Cross multiply
    303,456.85x = 455,185.28 × 145,604.05
  4. Step 4: Simplify right side
    303,456.85x = 66,276,819,540.36
  5. Step 5: Solve for x
    x = 66,276,819,540.36/303,456.85
  6. Step 6: Final answer
    x = 218,406.08

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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.