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Finding the Fourth Proportional to 489,267.20, 733,900.80 and 209,331.20

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Solution

The fourth proportional to 489,267.20, 733,900.80 and 209,331.20 is: 313,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,267.20 : 733,900.80 = 209,331.20 : x
  2. Step 2: Convert to fraction form
    489,267.20/733,900.80 = 209,331.20/x
  3. Step 3: Cross multiply
    489,267.20x = 733,900.80 × 209,331.20
  4. Step 4: Simplify right side
    489,267.20x = 153,628,335,144.96
  5. Step 5: Solve for x
    x = 153,628,335,144.96/489,267.20
  6. Step 6: Final answer
    x = 313,996.80

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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.