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Finding the Fourth Proportional to 303,467.80, 455,007.30 and 126,045.40

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Solution

The fourth proportional to 303,467.80, 455,007.30 and 126,045.40 is: 188,987.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,467.80 : 455,007.30 = 126,045.40 : x
  2. Step 2: Convert to fraction form
    303,467.80/455,007.30 = 126,045.40/x
  3. Step 3: Cross multiply
    303,467.80x = 455,007.30 × 126,045.40
  4. Step 4: Simplify right side
    303,467.80x = 57,351,577,131.42
  5. Step 5: Solve for x
    x = 57,351,577,131.42/303,467.80
  6. Step 6: Final answer
    x = 188,987.36

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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.