Home / 219,055.38-328,583.10-85,998.30

Finding the Fourth Proportional to 219,055.38, 328,583.10 and 85,998.30

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Solution

The fourth proportional to 219,055.38, 328,583.10 and 85,998.30 is: 128,997.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,055.38 : 328,583.10 = 85,998.30 : x
  2. Step 2: Convert to fraction form
    219,055.38/328,583.10 = 85,998.30/x
  3. Step 3: Cross multiply
    219,055.38x = 328,583.10 × 85,998.30
  4. Step 4: Simplify right side
    219,055.38x = 28,257,588,008.73
  5. Step 5: Solve for x
    x = 28,257,588,008.73/219,055.38
  6. Step 6: Final answer
    x = 128,997.46

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Double scale
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Similar ratio
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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.