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Finding the Fourth Proportional to 458,745.36, 688,118.04 and 143,229.30

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Solution

The fourth proportional to 458,745.36, 688,118.04 and 143,229.30 is: 214,843.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,745.36 : 688,118.04 = 143,229.30 : x
  2. Step 2: Convert to fraction form
    458,745.36/688,118.04 = 143,229.30/x
  3. Step 3: Cross multiply
    458,745.36x = 688,118.04 × 143,229.30
  4. Step 4: Simplify right side
    458,745.36x = 98,558,665,186.57
  5. Step 5: Solve for x
    x = 98,558,665,186.57/458,745.36
  6. Step 6: Final answer
    x = 214,843.95

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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.