Home / 388,124.10-582,186.15-198,511.20

Finding the Fourth Proportional to 388,124.10, 582,186.15 and 198,511.20

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Solution

The fourth proportional to 388,124.10, 582,186.15 and 198,511.20 is: 297,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,124.10 : 582,186.15 = 198,511.20 : x
  2. Step 2: Convert to fraction form
    388,124.10/582,186.15 = 198,511.20/x
  3. Step 3: Cross multiply
    388,124.10x = 582,186.15 × 198,511.20
  4. Step 4: Simplify right side
    388,124.10x = 115,570,471,259.88
  5. Step 5: Solve for x
    x = 115,570,471,259.88/388,124.10
  6. Step 6: Final answer
    x = 297,766.80

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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.