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Finding the Fourth Proportional to 230,395.94, 317,947.83 and 128,427.88

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Solution

The fourth proportional to 230,395.94, 317,947.83 and 128,427.88 is: 177,231.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,395.94 : 317,947.83 = 128,427.88 : x
  2. Step 2: Convert to fraction form
    230,395.94/317,947.83 = 128,427.88/x
  3. Step 3: Cross multiply
    230,395.94x = 317,947.83 × 128,427.88
  4. Step 4: Simplify right side
    230,395.94x = 40,833,365,799.59
  5. Step 5: Solve for x
    x = 40,833,365,799.59/230,395.94
  6. Step 6: Final answer
    x = 177,231.27

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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.