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Finding the Fourth Proportional to 446,820.60, 670,230.90 and 257,863.80

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Solution

The fourth proportional to 446,820.60, 670,230.90 and 257,863.80 is: 386,795.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,820.60 : 670,230.90 = 257,863.80 : x
  2. Step 2: Convert to fraction form
    446,820.60/670,230.90 = 257,863.80/x
  3. Step 3: Cross multiply
    446,820.60x = 670,230.90 × 257,863.80
  4. Step 4: Simplify right side
    446,820.60x = 172,828,286,751.42
  5. Step 5: Solve for x
    x = 172,828,286,751.42/446,820.60
  6. Step 6: Final answer
    x = 386,795.70

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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.