Home / 388,645.55-582,912.96-122,399.15

Finding the Fourth Proportional to 388,645.55, 582,912.96 and 122,399.15

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Solution

The fourth proportional to 388,645.55, 582,912.96 and 122,399.15 is: 183,581.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,645.55 : 582,912.96 = 122,399.15 : x
  2. Step 2: Convert to fraction form
    388,645.55/582,912.96 = 122,399.15/x
  3. Step 3: Cross multiply
    388,645.55x = 582,912.96 × 122,399.15
  4. Step 4: Simplify right side
    388,645.55x = 71,348,047,913.42
  5. Step 5: Solve for x
    x = 71,348,047,913.42/388,645.55
  6. Step 6: Final answer
    x = 183,581.28

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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.