Home / 258,847.02-388,245.02-81,349.29

Finding the Fourth Proportional to 258,847.02, 388,245.02 and 81,349.29

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Solution

The fourth proportional to 258,847.02, 388,245.02 and 81,349.29 is: 122,015.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,847.02 : 388,245.02 = 81,349.29 : x
  2. Step 2: Convert to fraction form
    258,847.02/388,245.02 = 81,349.29/x
  3. Step 3: Cross multiply
    258,847.02x = 388,245.02 × 81,349.29
  4. Step 4: Simplify right side
    258,847.02x = 31,583,456,316.29
  5. Step 5: Solve for x
    x = 31,583,456,316.29/258,847.02
  6. Step 6: Final answer
    x = 122,015.92

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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.