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Finding the Fourth Proportional to 360,631.80, 539,910.90 and 220,663.80

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Solution

The fourth proportional to 360,631.80, 539,910.90 and 220,663.80 is: 330,361.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,631.80 : 539,910.90 = 220,663.80 : x
  2. Step 2: Convert to fraction form
    360,631.80/539,910.90 = 220,663.80/x
  3. Step 3: Cross multiply
    360,631.80x = 539,910.90 × 220,663.80
  4. Step 4: Simplify right side
    360,631.80x = 119,138,790,855.42
  5. Step 5: Solve for x
    x = 119,138,790,855.42/360,631.80
  6. Step 6: Final answer
    x = 330,361.30

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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.