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Finding the Fourth Proportional to 347,622, 479,718.36 and 188,646

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Solution

The fourth proportional to 347,622, 479,718.36 and 188,646 is: 260,331.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,622 : 479,718.36 = 188,646 : x
  2. Step 2: Convert to fraction form
    347,622/479,718.36 = 188,646/x
  3. Step 3: Cross multiply
    347,622x = 479,718.36 × 188,646
  4. Step 4: Simplify right side
    347,622x = 90,496,949,740.56
  5. Step 5: Solve for x
    x = 90,496,949,740.56/347,622
  6. Step 6: Final answer
    x = 260,331.48

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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.