Home / 219,013.88-328,556.35-85,821.93

Finding the Fourth Proportional to 219,013.88, 328,556.35 and 85,821.93

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Solution

The fourth proportional to 219,013.88, 328,556.35 and 85,821.93 is: 128,746.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,013.88 : 328,556.35 = 85,821.93 : x
  2. Step 2: Convert to fraction form
    219,013.88/328,556.35 = 85,821.93/x
  3. Step 3: Cross multiply
    219,013.88x = 328,556.35 × 85,821.93
  4. Step 4: Simplify right side
    219,013.88x = 28,197,340,178.03
  5. Step 5: Solve for x
    x = 28,197,340,178.03/219,013.88
  6. Step 6: Final answer
    x = 128,746.82

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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.