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Finding the Fourth Proportional to 207,976.42, 287,007.64 and 112,483.11

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Solution

The fourth proportional to 207,976.42, 287,007.64 and 112,483.11 is: 155,226.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,976.42 : 287,007.64 = 112,483.11 : x
  2. Step 2: Convert to fraction form
    207,976.42/287,007.64 = 112,483.11/x
  3. Step 3: Cross multiply
    207,976.42x = 287,007.64 × 112,483.11
  4. Step 4: Simplify right side
    207,976.42x = 32,283,511,940.96
  5. Step 5: Solve for x
    x = 32,283,511,940.96/207,976.42
  6. Step 6: Final answer
    x = 155,226.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.