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Finding the Fourth Proportional to 355,660.64, 490,804.80 and 194,515.19

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Solution

The fourth proportional to 355,660.64, 490,804.80 and 194,515.19 is: 268,427.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,660.64 : 490,804.80 = 194,515.19 : x
  2. Step 2: Convert to fraction form
    355,660.64/490,804.80 = 194,515.19/x
  3. Step 3: Cross multiply
    355,660.64x = 490,804.80 × 194,515.19
  4. Step 4: Simplify right side
    355,660.64x = 95,468,986,470.89
  5. Step 5: Solve for x
    x = 95,468,986,470.89/355,660.64
  6. Step 6: Final answer
    x = 268,427.19

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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.