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Finding the Fourth Proportional to 303,648.14, 455,226.06 and 126,287.84

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Solution

The fourth proportional to 303,648.14, 455,226.06 and 126,287.84 is: 189,329.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,648.14 : 455,226.06 = 126,287.84 : x
  2. Step 2: Convert to fraction form
    303,648.14/455,226.06 = 126,287.84/x
  3. Step 3: Cross multiply
    303,648.14x = 455,226.06 × 126,287.84
  4. Step 4: Simplify right side
    303,648.14x = 57,489,515,829.11
  5. Step 5: Solve for x
    x = 57,489,515,829.11/303,648.14
  6. Step 6: Final answer
    x = 189,329.39

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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.