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Finding the Fourth Proportional to 660,360.38, 990,682.65 and 204,942.60

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Solution

The fourth proportional to 660,360.38, 990,682.65 and 204,942.60 is: 307,458.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,360.38 : 990,682.65 = 204,942.60 : x
  2. Step 2: Convert to fraction form
    660,360.38/990,682.65 = 204,942.60/x
  3. Step 3: Cross multiply
    660,360.38x = 990,682.65 × 204,942.60
  4. Step 4: Simplify right side
    660,360.38x = 203,033,078,065.89
  5. Step 5: Solve for x
    x = 203,033,078,065.89/660,360.38
  6. Step 6: Final answer
    x = 307,458.00

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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.