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Finding the Fourth Proportional to 303,912.05, 455,266.65 and 266,514.35

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Solution

The fourth proportional to 303,912.05, 455,266.65 and 266,514.35 is: 399,244.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,912.05 : 455,266.65 = 266,514.35 : x
  2. Step 2: Convert to fraction form
    303,912.05/455,266.65 = 266,514.35/x
  3. Step 3: Cross multiply
    303,912.05x = 455,266.65 × 266,514.35
  4. Step 4: Simplify right side
    303,912.05x = 121,335,095,301.43
  5. Step 5: Solve for x
    x = 121,335,095,301.43/303,912.05
  6. Step 6: Final answer
    x = 399,244.11

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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.