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Finding the Fourth Proportional to 263,245.80, 394,782.30 and 97,012.20

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Solution

The fourth proportional to 263,245.80, 394,782.30 and 97,012.20 is: 145,486.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,245.80 : 394,782.30 = 97,012.20 : x
  2. Step 2: Convert to fraction form
    263,245.80/394,782.30 = 97,012.20/x
  3. Step 3: Cross multiply
    263,245.80x = 394,782.30 × 97,012.20
  4. Step 4: Simplify right side
    263,245.80x = 38,298,699,444.06
  5. Step 5: Solve for x
    x = 38,298,699,444.06/263,245.80
  6. Step 6: Final answer
    x = 145,486.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.