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Finding the Fourth Proportional to 303,654.20, 455,481.30 and 163,686.20

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Solution

The fourth proportional to 303,654.20, 455,481.30 and 163,686.20 is: 245,529.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,654.20 : 455,481.30 = 163,686.20 : x
  2. Step 2: Convert to fraction form
    303,654.20/455,481.30 = 163,686.20/x
  3. Step 3: Cross multiply
    303,654.20x = 455,481.30 × 163,686.20
  4. Step 4: Simplify right side
    303,654.20x = 74,556,003,168.06
  5. Step 5: Solve for x
    x = 74,556,003,168.06/303,654.20
  6. Step 6: Final answer
    x = 245,529.30

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1.5x scale

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.