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Finding the Fourth Proportional to 201,268.52, 277,776.83 and 129,856.28

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Solution

The fourth proportional to 201,268.52, 277,776.83 and 129,856.28 is: 179,218.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,268.52 : 277,776.83 = 129,856.28 : x
  2. Step 2: Convert to fraction form
    201,268.52/277,776.83 = 129,856.28/x
  3. Step 3: Cross multiply
    201,268.52x = 277,776.83 × 129,856.28
  4. Step 4: Simplify right side
    201,268.52x = 36,071,065,164.71
  5. Step 5: Solve for x
    x = 36,071,065,164.71/201,268.52
  6. Step 6: Final answer
    x = 179,218.61

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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.