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Finding the Fourth Proportional to 660,297.92, 990,588.90 and 204,880.02

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Solution

The fourth proportional to 660,297.92, 990,588.90 and 204,880.02 is: 307,364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,297.92 : 990,588.90 = 204,880.02 : x
  2. Step 2: Convert to fraction form
    660,297.92/990,588.90 = 204,880.02/x
  3. Step 3: Cross multiply
    660,297.92x = 990,588.90 × 204,880.02
  4. Step 4: Simplify right side
    660,297.92x = 202,951,873,643.78
  5. Step 5: Solve for x
    x = 202,951,873,643.78/660,297.92
  6. Step 6: Final answer
    x = 307,364.10

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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.