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Finding the Fourth Proportional to 201,379, 277,903.02 and 111,972.28

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Solution

The fourth proportional to 201,379, 277,903.02 and 111,972.28 is: 154,521.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,379 : 277,903.02 = 111,972.28 : x
  2. Step 2: Convert to fraction form
    201,379/277,903.02 = 111,972.28/x
  3. Step 3: Cross multiply
    201,379x = 277,903.02 × 111,972.28
  4. Step 4: Simplify right side
    201,379x = 31,117,434,768.29
  5. Step 5: Solve for x
    x = 31,117,434,768.29/201,379
  6. Step 6: Final answer
    x = 154,521.75

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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.