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Finding the Fourth Proportional to 303,676.40, 455,503.80 and 137,464.40

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Solution

The fourth proportional to 303,676.40, 455,503.80 and 137,464.40 is: 206,191.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,676.40 : 455,503.80 = 137,464.40 : x
  2. Step 2: Convert to fraction form
    303,676.40/455,503.80 = 137,464.40/x
  3. Step 3: Cross multiply
    303,676.40x = 455,503.80 × 137,464.40
  4. Step 4: Simplify right side
    303,676.40x = 62,615,556,564.72
  5. Step 5: Solve for x
    x = 62,615,556,564.72/303,676.40
  6. Step 6: Final answer
    x = 206,191.71

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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.