Home / 388,917.80-582,720.60-188,807.30

Finding the Fourth Proportional to 388,917.80, 582,720.60 and 188,807.30

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Solution

The fourth proportional to 388,917.80, 582,720.60 and 188,807.30 is: 282,892.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,917.80 : 582,720.60 = 188,807.30 : x
  2. Step 2: Convert to fraction form
    388,917.80/582,720.60 = 188,807.30/x
  3. Step 3: Cross multiply
    388,917.80x = 582,720.60 × 188,807.30
  4. Step 4: Simplify right side
    388,917.80x = 110,021,903,140.38
  5. Step 5: Solve for x
    x = 110,021,903,140.38/388,917.80
  6. Step 6: Final answer
    x = 282,892.43

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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.