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Finding the Fourth Proportional to 255,158.48, 384,466.46 and 211,757.60

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Solution

The fourth proportional to 255,158.48, 384,466.46 and 211,757.60 is: 319,071.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,158.48 : 384,466.46 = 211,757.60 : x
  2. Step 2: Convert to fraction form
    255,158.48/384,466.46 = 211,757.60/x
  3. Step 3: Cross multiply
    255,158.48x = 384,466.46 × 211,757.60
  4. Step 4: Simplify right side
    255,158.48x = 81,413,694,850.10
  5. Step 5: Solve for x
    x = 81,413,694,850.10/255,158.48
  6. Step 6: Final answer
    x = 319,071.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.