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Finding the Fourth Proportional to 387,783.02, 582,219.47 and 198,379.25

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Solution

The fourth proportional to 387,783.02, 582,219.47 and 198,379.25 is: 297,847.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,783.02 : 582,219.47 = 198,379.25 : x
  2. Step 2: Convert to fraction form
    387,783.02/582,219.47 = 198,379.25/x
  3. Step 3: Cross multiply
    387,783.02x = 582,219.47 × 198,379.25
  4. Step 4: Simplify right side
    387,783.02x = 115,500,257,891.00
  5. Step 5: Solve for x
    x = 115,500,257,891.00/387,783.02
  6. Step 6: Final answer
    x = 297,847.65

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1.5x scale

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.