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Finding the Fourth Proportional to 446,868.60, 670,302.90 and 257,911.80

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Solution

The fourth proportional to 446,868.60, 670,302.90 and 257,911.80 is: 386,867.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,868.60 : 670,302.90 = 257,911.80 : x
  2. Step 2: Convert to fraction form
    446,868.60/670,302.90 = 257,911.80/x
  3. Step 3: Cross multiply
    446,868.60x = 670,302.90 × 257,911.80
  4. Step 4: Simplify right side
    446,868.60x = 172,879,027,484.22
  5. Step 5: Solve for x
    x = 172,879,027,484.22/446,868.60
  6. Step 6: Final answer
    x = 386,867.70

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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.