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Finding the Fourth Proportional to 476,844.60, 715,007.70 and 196,390.20

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Solution

The fourth proportional to 476,844.60, 715,007.70 and 196,390.20 is: 294,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,844.60 : 715,007.70 = 196,390.20 : x
  2. Step 2: Convert to fraction form
    476,844.60/715,007.70 = 196,390.20/x
  3. Step 3: Cross multiply
    476,844.60x = 715,007.70 × 196,390.20
  4. Step 4: Simplify right side
    476,844.60x = 140,420,505,204.54
  5. Step 5: Solve for x
    x = 140,420,505,204.54/476,844.60
  6. Step 6: Final answer
    x = 294,478.55

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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.