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Finding the Fourth Proportional to 303,497.60, 455,246.40 and 126,131.90

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Solution

The fourth proportional to 303,497.60, 455,246.40 and 126,131.90 is: 189,197.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,497.60 : 455,246.40 = 126,131.90 : x
  2. Step 2: Convert to fraction form
    303,497.60/455,246.40 = 126,131.90/x
  3. Step 3: Cross multiply
    303,497.60x = 455,246.40 × 126,131.90
  4. Step 4: Simplify right side
    303,497.60x = 57,421,093,400.16
  5. Step 5: Solve for x
    x = 57,421,093,400.16/303,497.60
  6. Step 6: Final answer
    x = 189,197.85

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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.