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Finding the Fourth Proportional to 355,321.06, 490,393.08 and 226,218.30

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Solution

The fourth proportional to 355,321.06, 490,393.08 and 226,218.30 is: 312,213.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,321.06 : 490,393.08 = 226,218.30 : x
  2. Step 2: Convert to fraction form
    355,321.06/490,393.08 = 226,218.30/x
  3. Step 3: Cross multiply
    355,321.06x = 490,393.08 × 226,218.30
  4. Step 4: Simplify right side
    355,321.06x = 110,935,888,889.36
  5. Step 5: Solve for x
    x = 110,935,888,889.36/355,321.06
  6. Step 6: Final answer
    x = 312,213.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.