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Finding the Fourth Proportional to 492,556.80, 738,662.40 and 255,820.80

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Solution

The fourth proportional to 492,556.80, 738,662.40 and 255,820.80 is: 383,641.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,556.80 : 738,662.40 = 255,820.80 : x
  2. Step 2: Convert to fraction form
    492,556.80/738,662.40 = 255,820.80/x
  3. Step 3: Cross multiply
    492,556.80x = 738,662.40 × 255,820.80
  4. Step 4: Simplify right side
    492,556.80x = 188,965,206,097.92
  5. Step 5: Solve for x
    x = 188,965,206,097.92/492,556.80
  6. Step 6: Final answer
    x = 383,641.45

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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.