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Finding the Fourth Proportional to 308,996.08, 426,379.35 and 173,011.12

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Solution

The fourth proportional to 308,996.08, 426,379.35 and 173,011.12 is: 238,735.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,996.08 : 426,379.35 = 173,011.12 : x
  2. Step 2: Convert to fraction form
    308,996.08/426,379.35 = 173,011.12/x
  3. Step 3: Cross multiply
    308,996.08x = 426,379.35 × 173,011.12
  4. Step 4: Simplify right side
    308,996.08x = 73,768,368,888.37
  5. Step 5: Solve for x
    x = 73,768,368,888.37/308,996.08
  6. Step 6: Final answer
    x = 238,735.61

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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.