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Finding the Fourth Proportional to 201,908.90, 278,630.43 and 111,273.23

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Solution

The fourth proportional to 201,908.90, 278,630.43 and 111,273.23 is: 153,554.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,908.90 : 278,630.43 = 111,273.23 : x
  2. Step 2: Convert to fraction form
    201,908.90/278,630.43 = 111,273.23/x
  3. Step 3: Cross multiply
    201,908.90x = 278,630.43 × 111,273.23
  4. Step 4: Simplify right side
    201,908.90x = 31,004,106,529.24
  5. Step 5: Solve for x
    x = 31,004,106,529.24/201,908.90
  6. Step 6: Final answer
    x = 153,554.93

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1.5x scale

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.