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Finding the Fourth Proportional to 201,999.52, 278,760.72 and 112,581.28

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Solution

The fourth proportional to 201,999.52, 278,760.72 and 112,581.28 is: 155,362.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,999.52 : 278,760.72 = 112,581.28 : x
  2. Step 2: Convert to fraction form
    201,999.52/278,760.72 = 112,581.28/x
  3. Step 3: Cross multiply
    201,999.52x = 278,760.72 × 112,581.28
  4. Step 4: Simplify right side
    201,999.52x = 31,383,238,671.32
  5. Step 5: Solve for x
    x = 31,383,238,671.32/201,999.52
  6. Step 6: Final answer
    x = 155,362.94

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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.