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Finding the Fourth Proportional to 303,879.60, 455,819.40 and 286,383.60

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Solution

The fourth proportional to 303,879.60, 455,819.40 and 286,383.60 is: 429,575.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,879.60 : 455,819.40 = 286,383.60 : x
  2. Step 2: Convert to fraction form
    303,879.60/455,819.40 = 286,383.60/x
  3. Step 3: Cross multiply
    303,879.60x = 455,819.40 × 286,383.60
  4. Step 4: Simplify right side
    303,879.60x = 130,539,200,721.84
  5. Step 5: Solve for x
    x = 130,539,200,721.84/303,879.60
  6. Step 6: Final answer
    x = 429,575.40

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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.