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Finding the Fourth Proportional to 347,364, 479,362.32 and 188,388

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Solution

The fourth proportional to 347,364, 479,362.32 and 188,388 is: 259,975.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,364 : 479,362.32 = 188,388 : x
  2. Step 2: Convert to fraction form
    347,364/479,362.32 = 188,388/x
  3. Step 3: Cross multiply
    347,364x = 479,362.32 × 188,388
  4. Step 4: Simplify right side
    347,364x = 90,306,108,740.16
  5. Step 5: Solve for x
    x = 90,306,108,740.16/347,364
  6. Step 6: Final answer
    x = 259,975.44

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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.