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Finding the Fourth Proportional to 324,205.80, 486,017.10 and 205,816.20

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Solution

The fourth proportional to 324,205.80, 486,017.10 and 205,816.20 is: 308,539.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,205.80 : 486,017.10 = 205,816.20 : x
  2. Step 2: Convert to fraction form
    324,205.80/486,017.10 = 205,816.20/x
  3. Step 3: Cross multiply
    324,205.80x = 486,017.10 × 205,816.20
  4. Step 4: Simplify right side
    324,205.80x = 100,030,192,657.02
  5. Step 5: Solve for x
    x = 100,030,192,657.02/324,205.80
  6. Step 6: Final answer
    x = 308,539.18

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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.