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Finding the Fourth Proportional to 309,809.80, 464,714.70 and 275,984.20

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Solution

The fourth proportional to 309,809.80, 464,714.70 and 275,984.20 is: 413,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,809.80 : 464,714.70 = 275,984.20 : x
  2. Step 2: Convert to fraction form
    309,809.80/464,714.70 = 275,984.20/x
  3. Step 3: Cross multiply
    309,809.80x = 464,714.70 × 275,984.20
  4. Step 4: Simplify right side
    309,809.80x = 128,253,914,707.74
  5. Step 5: Solve for x
    x = 128,253,914,707.74/309,809.80
  6. Step 6: Final answer
    x = 413,976.30

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Similar ratio
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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.