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Finding the Fourth Proportional to 303,800.60, 455,336.40 and 126,216.20

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Solution

The fourth proportional to 303,800.60, 455,336.40 and 126,216.20 is: 189,172.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,800.60 : 455,336.40 = 126,216.20 : x
  2. Step 2: Convert to fraction form
    303,800.60/455,336.40 = 126,216.20/x
  3. Step 3: Cross multiply
    303,800.60x = 455,336.40 × 126,216.20
  4. Step 4: Simplify right side
    303,800.60x = 57,470,830,129.68
  5. Step 5: Solve for x
    x = 57,470,830,129.68/303,800.60
  6. Step 6: Final answer
    x = 189,172.87

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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.