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Finding the Fourth Proportional to 351,630.61, 485,249.79 and 190,486.32

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Solution

The fourth proportional to 351,630.61, 485,249.79 and 190,486.32 is: 262,870.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,630.61 : 485,249.79 = 190,486.32 : x
  2. Step 2: Convert to fraction form
    351,630.61/485,249.79 = 190,486.32/x
  3. Step 3: Cross multiply
    351,630.61x = 485,249.79 × 190,486.32
  4. Step 4: Simplify right side
    351,630.61x = 92,433,446,777.87
  5. Step 5: Solve for x
    x = 92,433,446,777.87/351,630.61
  6. Step 6: Final answer
    x = 262,870.88

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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.