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Finding the Fourth Proportional to 303,367.70, 455,051.55 and 81,751.70

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Solution

The fourth proportional to 303,367.70, 455,051.55 and 81,751.70 is: 122,627.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,367.70 : 455,051.55 = 81,751.70 : x
  2. Step 2: Convert to fraction form
    303,367.70/455,051.55 = 81,751.70/x
  3. Step 3: Cross multiply
    303,367.70x = 455,051.55 × 81,751.70
  4. Step 4: Simplify right side
    303,367.70x = 37,201,237,800.14
  5. Step 5: Solve for x
    x = 37,201,237,800.14/303,367.70
  6. Step 6: Final answer
    x = 122,627.55

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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.