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Finding the Fourth Proportional to 213,103.44, 319,672.44 and 70,943.58

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Solution

The fourth proportional to 213,103.44, 319,672.44 and 70,943.58 is: 106,421.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,103.44 : 319,672.44 = 70,943.58 : x
  2. Step 2: Convert to fraction form
    213,103.44/319,672.44 = 70,943.58/x
  3. Step 3: Cross multiply
    213,103.44x = 319,672.44 × 70,943.58
  4. Step 4: Simplify right side
    213,103.44x = 22,678,707,320.94
  5. Step 5: Solve for x
    x = 22,678,707,320.94/213,103.44
  6. Step 6: Final answer
    x = 106,421.12

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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.