Home / 219,042.38-328,563.57-85,985.30

Finding the Fourth Proportional to 219,042.38, 328,563.57 and 85,985.30

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Solution

The fourth proportional to 219,042.38, 328,563.57 and 85,985.30 is: 128,977.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,042.38 : 328,563.57 = 85,985.30 : x
  2. Step 2: Convert to fraction form
    219,042.38/328,563.57 = 85,985.30/x
  3. Step 3: Cross multiply
    219,042.38x = 328,563.57 × 85,985.30
  4. Step 4: Simplify right side
    219,042.38x = 28,251,637,135.52
  5. Step 5: Solve for x
    x = 28,251,637,135.52/219,042.38
  6. Step 6: Final answer
    x = 128,977.95

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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.