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Finding the Fourth Proportional to 213,087.63, 319,683.50 and 70,932.63

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Solution

The fourth proportional to 213,087.63, 319,683.50 and 70,932.63 is: 106,416.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,087.63 : 319,683.50 = 70,932.63 : x
  2. Step 2: Convert to fraction form
    213,087.63/319,683.50 = 70,932.63/x
  3. Step 3: Cross multiply
    213,087.63x = 319,683.50 × 70,932.63
  4. Step 4: Simplify right side
    213,087.63x = 22,675,991,067.94
  5. Step 5: Solve for x
    x = 22,675,991,067.94/213,087.63
  6. Step 6: Final answer
    x = 106,416.27

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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.