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Finding the Fourth Proportional to 275,155.64, 379,553.87 and 173,019.40

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Solution

The fourth proportional to 275,155.64, 379,553.87 and 173,019.40 is: 238,665.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,155.64 : 379,553.87 = 173,019.40 : x
  2. Step 2: Convert to fraction form
    275,155.64/379,553.87 = 173,019.40/x
  3. Step 3: Cross multiply
    275,155.64x = 379,553.87 × 173,019.40
  4. Step 4: Simplify right side
    275,155.64x = 65,670,182,855.08
  5. Step 5: Solve for x
    x = 65,670,182,855.08/275,155.64
  6. Step 6: Final answer
    x = 238,665.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.