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Finding the Fourth Proportional to 645,767.36, 968,798.46 and 196,551.89

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Solution

The fourth proportional to 645,767.36, 968,798.46 and 196,551.89 is: 294,872.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,767.36 : 968,798.46 = 196,551.89 : x
  2. Step 2: Convert to fraction form
    645,767.36/968,798.46 = 196,551.89/x
  3. Step 3: Cross multiply
    645,767.36x = 968,798.46 × 196,551.89
  4. Step 4: Simplify right side
    645,767.36x = 190,419,168,342.09
  5. Step 5: Solve for x
    x = 190,419,168,342.09/645,767.36
  6. Step 6: Final answer
    x = 294,872.71

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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.