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Finding the Fourth Proportional to 305,435.72, 421,524.41 and 169,495.39

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Solution

The fourth proportional to 305,435.72, 421,524.41 and 169,495.39 is: 233,916.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,435.72 : 421,524.41 = 169,495.39 : x
  2. Step 2: Convert to fraction form
    305,435.72/421,524.41 = 169,495.39/x
  3. Step 3: Cross multiply
    305,435.72x = 421,524.41 × 169,495.39
  4. Step 4: Simplify right side
    305,435.72x = 71,446,441,312.37
  5. Step 5: Solve for x
    x = 71,446,441,312.37/305,435.72
  6. Step 6: Final answer
    x = 233,916.46

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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.