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Finding the Fourth Proportional to 328,169.63, 492,337.46 and 91,512.33

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Solution

The fourth proportional to 328,169.63, 492,337.46 and 91,512.33 is: 137,291.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,169.63 : 492,337.46 = 91,512.33 : x
  2. Step 2: Convert to fraction form
    328,169.63/492,337.46 = 91,512.33/x
  3. Step 3: Cross multiply
    328,169.63x = 492,337.46 × 91,512.33
  4. Step 4: Simplify right side
    328,169.63x = 45,054,948,339.66
  5. Step 5: Solve for x
    x = 45,054,948,339.66/328,169.63
  6. Step 6: Final answer
    x = 137,291.65

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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.