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Finding the Fourth Proportional to 328,169.94, 492,337.93 and 91,512.65

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Solution

The fourth proportional to 328,169.94, 492,337.93 and 91,512.65 is: 137,292.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,169.94 : 492,337.93 = 91,512.65 : x
  2. Step 2: Convert to fraction form
    328,169.94/492,337.93 = 91,512.65/x
  3. Step 3: Cross multiply
    328,169.94x = 492,337.93 × 91,512.65
  4. Step 4: Simplify right side
    328,169.94x = 45,055,146,208.12
  5. Step 5: Solve for x
    x = 45,055,146,208.12/328,169.94
  6. Step 6: Final answer
    x = 137,292.12

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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.