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Finding the Fourth Proportional to 347,211.72, 479,165.82 and 203,970.51

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Solution

The fourth proportional to 347,211.72, 479,165.82 and 203,970.51 is: 281,487.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,211.72 : 479,165.82 = 203,970.51 : x
  2. Step 2: Convert to fraction form
    347,211.72/479,165.82 = 203,970.51/x
  3. Step 3: Cross multiply
    347,211.72x = 479,165.82 × 203,970.51
  4. Step 4: Simplify right side
    347,211.72x = 97,735,696,679.97
  5. Step 5: Solve for x
    x = 97,735,696,679.97/347,211.72
  6. Step 6: Final answer
    x = 281,487.32

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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.