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Finding the Fourth Proportional to 355,304.49, 490,370.20 and 226,201.72

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Solution

The fourth proportional to 355,304.49, 490,370.20 and 226,201.72 is: 312,190.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,304.49 : 490,370.20 = 226,201.72 : x
  2. Step 2: Convert to fraction form
    355,304.49/490,370.20 = 226,201.72/x
  3. Step 3: Cross multiply
    355,304.49x = 490,370.20 × 226,201.72
  4. Step 4: Simplify right side
    355,304.49x = 110,922,583,289.71
  5. Step 5: Solve for x
    x = 110,922,583,289.71/355,304.49
  6. Step 6: Final answer
    x = 312,190.21

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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.