Home / 219,315.18-328,988.97-193,200.78

Finding the Fourth Proportional to 219,315.18, 328,988.97 and 193,200.78

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Solution

The fourth proportional to 219,315.18, 328,988.97 and 193,200.78 is: 289,815.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,315.18 : 328,988.97 = 193,200.78 : x
  2. Step 2: Convert to fraction form
    219,315.18/328,988.97 = 193,200.78/x
  3. Step 3: Cross multiply
    219,315.18x = 328,988.97 × 193,200.78
  4. Step 4: Simplify right side
    219,315.18x = 63,560,925,615.40
  5. Step 5: Solve for x
    x = 63,560,925,615.40/219,315.18
  6. Step 6: Final answer
    x = 289,815.44

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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.