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Finding the Fourth Proportional to 351,638.58, 485,263.53 and 190,493.49

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Solution

The fourth proportional to 351,638.58, 485,263.53 and 190,493.49 is: 262,882.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,638.58 : 485,263.53 = 190,493.49 : x
  2. Step 2: Convert to fraction form
    351,638.58/485,263.53 = 190,493.49/x
  3. Step 3: Cross multiply
    351,638.58x = 485,263.53 × 190,493.49
  4. Step 4: Simplify right side
    351,638.58x = 92,439,543,399.42
  5. Step 5: Solve for x
    x = 92,439,543,399.42/351,638.58
  6. Step 6: Final answer
    x = 262,882.26

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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.