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Finding the Fourth Proportional to 347,436.31, 479,393.92 and 218,299.96

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Solution

The fourth proportional to 347,436.31, 479,393.92 and 218,299.96 is: 301,211.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,436.31 : 479,393.92 = 218,299.96 : x
  2. Step 2: Convert to fraction form
    347,436.31/479,393.92 = 218,299.96/x
  3. Step 3: Cross multiply
    347,436.31x = 479,393.92 × 218,299.96
  4. Step 4: Simplify right side
    347,436.31x = 104,651,673,560.24
  5. Step 5: Solve for x
    x = 104,651,673,560.24/347,436.31
  6. Step 6: Final answer
    x = 301,211.10

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1.5x scale

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.