Home / 388,071.11-582,203.55-135,355.23

Finding the Fourth Proportional to 388,071.11, 582,203.55 and 135,355.23

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Solution

The fourth proportional to 388,071.11, 582,203.55 and 135,355.23 is: 203,066.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,071.11 : 582,203.55 = 135,355.23 : x
  2. Step 2: Convert to fraction form
    388,071.11/582,203.55 = 135,355.23/x
  3. Step 3: Cross multiply
    388,071.11x = 582,203.55 × 135,355.23
  4. Step 4: Simplify right side
    388,071.11x = 78,804,297,092.75
  5. Step 5: Solve for x
    x = 78,804,297,092.75/388,071.11
  6. Step 6: Final answer
    x = 203,066.64

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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.