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Finding the Fourth Proportional to 288,996.73, 398,895.73 and 168,161.45

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Solution

The fourth proportional to 288,996.73, 398,895.73 and 168,161.45 is: 232,109.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,996.73 : 398,895.73 = 168,161.45 : x
  2. Step 2: Convert to fraction form
    288,996.73/398,895.73 = 168,161.45/x
  3. Step 3: Cross multiply
    288,996.73x = 398,895.73 × 168,161.45
  4. Step 4: Simplify right side
    288,996.73x = 67,078,881,940.73
  5. Step 5: Solve for x
    x = 67,078,881,940.73/288,996.73
  6. Step 6: Final answer
    x = 232,109.49

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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.