Home / 219,018.90-328,563.84-85,826.94

Finding the Fourth Proportional to 219,018.90, 328,563.84 and 85,826.94

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Solution

The fourth proportional to 219,018.90, 328,563.84 and 85,826.94 is: 128,754.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,018.90 : 328,563.84 = 85,826.94 : x
  2. Step 2: Convert to fraction form
    219,018.90/328,563.84 = 85,826.94/x
  3. Step 3: Cross multiply
    219,018.90x = 328,563.84 × 85,826.94
  4. Step 4: Simplify right side
    219,018.90x = 28,199,628,981.85
  5. Step 5: Solve for x
    x = 28,199,628,981.85/219,018.90
  6. Step 6: Final answer
    x = 128,754.32

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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.