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Finding the Fourth Proportional to 331,506.63, 457,479.75 and 188,266.65

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Solution

The fourth proportional to 331,506.63, 457,479.75 and 188,266.65 is: 259,808.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,506.63 : 457,479.75 = 188,266.65 : x
  2. Step 2: Convert to fraction form
    331,506.63/457,479.75 = 188,266.65/x
  3. Step 3: Cross multiply
    331,506.63x = 457,479.75 × 188,266.65
  4. Step 4: Simplify right side
    331,506.63x = 86,128,179,975.34
  5. Step 5: Solve for x
    x = 86,128,179,975.34/331,506.63
  6. Step 6: Final answer
    x = 259,808.32

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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.