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Finding the Fourth Proportional to 201,908.00, 278,634.88 and 111,267.21

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Solution

The fourth proportional to 201,908.00, 278,634.88 and 111,267.21 is: 153,549.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,908.00 : 278,634.88 = 111,267.21 : x
  2. Step 2: Convert to fraction form
    201,908.00/278,634.88 = 111,267.21/x
  3. Step 3: Cross multiply
    201,908.00x = 278,634.88 × 111,267.21
  4. Step 4: Simplify right side
    201,908.00x = 31,002,926,264.04
  5. Step 5: Solve for x
    x = 31,002,926,264.04/201,908.00
  6. Step 6: Final answer
    x = 153,549.77

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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.