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Finding the Fourth Proportional to 303,556.80, 455,335.20 and 298,891.20

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Solution

The fourth proportional to 303,556.80, 455,335.20 and 298,891.20 is: 448,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,556.80 : 455,335.20 = 298,891.20 : x
  2. Step 2: Convert to fraction form
    303,556.80/455,335.20 = 298,891.20/x
  3. Step 3: Cross multiply
    303,556.80x = 455,335.20 × 298,891.20
  4. Step 4: Simplify right side
    303,556.80x = 136,095,684,330.24
  5. Step 5: Solve for x
    x = 136,095,684,330.24/303,556.80
  6. Step 6: Final answer
    x = 448,336.80

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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.