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Finding the Fourth Proportional to 277,270.06, 415,905.20 and 66,908

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Solution

The fourth proportional to 277,270.06, 415,905.20 and 66,908 is: 100,362.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,270.06 : 415,905.20 = 66,908 : x
  2. Step 2: Convert to fraction form
    277,270.06/415,905.20 = 66,908/x
  3. Step 3: Cross multiply
    277,270.06x = 415,905.20 × 66,908
  4. Step 4: Simplify right side
    277,270.06x = 27,827,385,121.60
  5. Step 5: Solve for x
    x = 27,827,385,121.60/277,270.06
  6. Step 6: Final answer
    x = 100,362.03

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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.