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Finding the Fourth Proportional to 369,173.89, 509,460.20 and 199,408.02

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Solution

The fourth proportional to 369,173.89, 509,460.20 and 199,408.02 is: 275,183.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,173.89 : 509,460.20 = 199,408.02 : x
  2. Step 2: Convert to fraction form
    369,173.89/509,460.20 = 199,408.02/x
  3. Step 3: Cross multiply
    369,173.89x = 509,460.20 × 199,408.02
  4. Step 4: Simplify right side
    369,173.89x = 101,590,449,750.80
  5. Step 5: Solve for x
    x = 101,590,449,750.80/369,173.89
  6. Step 6: Final answer
    x = 275,183.19

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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.