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Finding the Fourth Proportional to 326,410.64, 489,320.36 and 115,999.36

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Solution

The fourth proportional to 326,410.64, 489,320.36 and 115,999.36 is: 173,893.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,410.64 : 489,320.36 = 115,999.36 : x
  2. Step 2: Convert to fraction form
    326,410.64/489,320.36 = 115,999.36/x
  3. Step 3: Cross multiply
    326,410.64x = 489,320.36 × 115,999.36
  4. Step 4: Simplify right side
    326,410.64x = 56,760,848,594.97
  5. Step 5: Solve for x
    x = 56,760,848,594.97/326,410.64
  6. Step 6: Final answer
    x = 173,893.99

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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.