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Finding the Fourth Proportional to 446,853.60, 670,280.40 and 257,896.80

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Solution

The fourth proportional to 446,853.60, 670,280.40 and 257,896.80 is: 386,845.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,853.60 : 670,280.40 = 257,896.80 : x
  2. Step 2: Convert to fraction form
    446,853.60/670,280.40 = 257,896.80/x
  3. Step 3: Cross multiply
    446,853.60x = 670,280.40 × 257,896.80
  4. Step 4: Simplify right side
    446,853.60x = 172,863,170,262.72
  5. Step 5: Solve for x
    x = 172,863,170,262.72/446,853.60
  6. Step 6: Final answer
    x = 386,845.20

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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.