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Finding the Fourth Proportional to 489,075.20, 733,612.80 and 204,716.60

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Solution

The fourth proportional to 489,075.20, 733,612.80 and 204,716.60 is: 307,074.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,075.20 : 733,612.80 = 204,716.60 : x
  2. Step 2: Convert to fraction form
    489,075.20/733,612.80 = 204,716.60/x
  3. Step 3: Cross multiply
    489,075.20x = 733,612.80 × 204,716.60
  4. Step 4: Simplify right side
    489,075.20x = 150,182,718,132.48
  5. Step 5: Solve for x
    x = 150,182,718,132.48/489,075.20
  6. Step 6: Final answer
    x = 307,074.90

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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.