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Finding the Fourth Proportional to 324,123.60, 485,310.60 and 254,139.60

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Solution

The fourth proportional to 324,123.60, 485,310.60 and 254,139.60 is: 380,523.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,123.60 : 485,310.60 = 254,139.60 : x
  2. Step 2: Convert to fraction form
    324,123.60/485,310.60 = 254,139.60/x
  3. Step 3: Cross multiply
    324,123.60x = 485,310.60 × 254,139.60
  4. Step 4: Simplify right side
    324,123.60x = 123,336,641,759.76
  5. Step 5: Solve for x
    x = 123,336,641,759.76/324,123.60
  6. Step 6: Final answer
    x = 380,523.48

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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.