Home / 325,985.06-489,168.22-136,429.58

Finding the Fourth Proportional to 325,985.06, 489,168.22 and 136,429.58

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Solution

The fourth proportional to 325,985.06, 489,168.22 and 136,429.58 is: 204,724.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,985.06 : 489,168.22 = 136,429.58 : x
  2. Step 2: Convert to fraction form
    325,985.06/489,168.22 = 136,429.58/x
  3. Step 3: Cross multiply
    325,985.06x = 489,168.22 × 136,429.58
  4. Step 4: Simplify right side
    325,985.06x = 66,737,014,803.95
  5. Step 5: Solve for x
    x = 66,737,014,803.95/325,985.06
  6. Step 6: Final answer
    x = 204,724.15

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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.