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Finding the Fourth Proportional to 275,946.40, 413,919.60 and 205,087.60

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Solution

The fourth proportional to 275,946.40, 413,919.60 and 205,087.60 is: 307,631.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,946.40 : 413,919.60 = 205,087.60 : x
  2. Step 2: Convert to fraction form
    275,946.40/413,919.60 = 205,087.60/x
  3. Step 3: Cross multiply
    275,946.40x = 413,919.60 × 205,087.60
  4. Step 4: Simplify right side
    275,946.40x = 84,889,777,356.96
  5. Step 5: Solve for x
    x = 84,889,777,356.96/275,946.40
  6. Step 6: Final answer
    x = 307,631.40

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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.