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Finding the Fourth Proportional to 303,782.40, 455,673.60 and 126,635.40

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Solution

The fourth proportional to 303,782.40, 455,673.60 and 126,635.40 is: 189,953.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,782.40 : 455,673.60 = 126,635.40 : x
  2. Step 2: Convert to fraction form
    303,782.40/455,673.60 = 126,635.40/x
  3. Step 3: Cross multiply
    303,782.40x = 455,673.60 × 126,635.40
  4. Step 4: Simplify right side
    303,782.40x = 57,704,408,605.44
  5. Step 5: Solve for x
    x = 57,704,408,605.44/303,782.40
  6. Step 6: Final answer
    x = 189,953.10

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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.