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Finding the Fourth Proportional to 356,355.10, 491,770.20 and 195,215.98

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Solution

The fourth proportional to 356,355.10, 491,770.20 and 195,215.98 is: 269,398.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,355.10 : 491,770.20 = 195,215.98 : x
  2. Step 2: Convert to fraction form
    356,355.10/491,770.20 = 195,215.98/x
  3. Step 3: Cross multiply
    356,355.10x = 491,770.20 × 195,215.98
  4. Step 4: Simplify right side
    356,355.10x = 96,001,401,527.80
  5. Step 5: Solve for x
    x = 96,001,401,527.80/356,355.10
  6. Step 6: Final answer
    x = 269,398.14

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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.