Home / 213,011.64-319,286.40-105,015.84

Finding the Fourth Proportional to 213,011.64, 319,286.40 and 105,015.84

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Solution

The fourth proportional to 213,011.64, 319,286.40 and 105,015.84 is: 157,409.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,011.64 : 319,286.40 = 105,015.84 : x
  2. Step 2: Convert to fraction form
    213,011.64/319,286.40 = 105,015.84/x
  3. Step 3: Cross multiply
    213,011.64x = 319,286.40 × 105,015.84
  4. Step 4: Simplify right side
    213,011.64x = 33,530,129,496.58
  5. Step 5: Solve for x
    x = 33,530,129,496.58/213,011.64
  6. Step 6: Final answer
    x = 157,409.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.