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Finding the Fourth Proportional to 303,916.80, 455,273.77 and 266,519.10

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Solution

The fourth proportional to 303,916.80, 455,273.77 and 266,519.10 is: 399,251.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,916.80 : 455,273.77 = 266,519.10 : x
  2. Step 2: Convert to fraction form
    303,916.80/455,273.77 = 266,519.10/x
  3. Step 3: Cross multiply
    303,916.80x = 455,273.77 × 266,519.10
  4. Step 4: Simplify right side
    303,916.80x = 121,339,155,434.01
  5. Step 5: Solve for x
    x = 121,339,155,434.01/303,916.80
  6. Step 6: Final answer
    x = 399,251.23

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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.