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Finding the Fourth Proportional to 225,245.70, 310,908.24 and 129,815.94

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Solution

The fourth proportional to 225,245.70, 310,908.24 and 129,815.94 is: 179,185.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,245.70 : 310,908.24 = 129,815.94 : x
  2. Step 2: Convert to fraction form
    225,245.70/310,908.24 = 129,815.94/x
  3. Step 3: Cross multiply
    225,245.70x = 310,908.24 × 129,815.94
  4. Step 4: Simplify right side
    225,245.70x = 40,360,845,429.35
  5. Step 5: Solve for x
    x = 40,360,845,429.35/225,245.70
  6. Step 6: Final answer
    x = 179,185.86

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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.