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Finding the Fourth Proportional to 318,553.29, 477,829.36 and 218,409.89

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Solution

The fourth proportional to 318,553.29, 477,829.36 and 218,409.89 is: 327,614.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,553.29 : 477,829.36 = 218,409.89 : x
  2. Step 2: Convert to fraction form
    318,553.29/477,829.36 = 218,409.89/x
  3. Step 3: Cross multiply
    318,553.29x = 477,829.36 × 218,409.89
  4. Step 4: Simplify right side
    318,553.29x = 104,362,657,956.37
  5. Step 5: Solve for x
    x = 104,362,657,956.37/318,553.29
  6. Step 6: Final answer
    x = 327,614.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.