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Finding the Fourth Proportional to 490,654.80, 735,982.20 and 210,200.40

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Solution

The fourth proportional to 490,654.80, 735,982.20 and 210,200.40 is: 315,300.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,654.80 : 735,982.20 = 210,200.40 : x
  2. Step 2: Convert to fraction form
    490,654.80/735,982.20 = 210,200.40/x
  3. Step 3: Cross multiply
    490,654.80x = 735,982.20 × 210,200.40
  4. Step 4: Simplify right side
    490,654.80x = 154,703,752,832.88
  5. Step 5: Solve for x
    x = 154,703,752,832.88/490,654.80
  6. Step 6: Final answer
    x = 315,300.60

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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.