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Finding the Fourth Proportional to 489,247.20, 733,870.80 and 209,311.20

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Solution

The fourth proportional to 489,247.20, 733,870.80 and 209,311.20 is: 313,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,247.20 : 733,870.80 = 209,311.20 : x
  2. Step 2: Convert to fraction form
    489,247.20/733,870.80 = 209,311.20/x
  3. Step 3: Cross multiply
    489,247.20x = 733,870.80 × 209,311.20
  4. Step 4: Simplify right side
    489,247.20x = 153,607,377,792.96
  5. Step 5: Solve for x
    x = 153,607,377,792.96/489,247.20
  6. Step 6: Final answer
    x = 313,966.80

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Similar ratio
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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.