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Finding the Fourth Proportional to 258,504.64, 356,736.96 and 145,328.32

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Solution

The fourth proportional to 258,504.64, 356,736.96 and 145,328.32 is: 200,553.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,504.64 : 356,736.96 = 145,328.32 : x
  2. Step 2: Convert to fraction form
    258,504.64/356,736.96 = 145,328.32/x
  3. Step 3: Cross multiply
    258,504.64x = 356,736.96 × 145,328.32
  4. Step 4: Simplify right side
    258,504.64x = 51,843,983,078.71
  5. Step 5: Solve for x
    x = 51,843,983,078.71/258,504.64
  6. Step 6: Final answer
    x = 200,553.39

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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.