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Finding the Fourth Proportional to 303,913.80, 455,269.27 and 266,516.10

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Solution

The fourth proportional to 303,913.80, 455,269.27 and 266,516.10 is: 399,246.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,913.80 : 455,269.27 = 266,516.10 : x
  2. Step 2: Convert to fraction form
    303,913.80/455,269.27 = 266,516.10/x
  3. Step 3: Cross multiply
    303,913.80x = 455,269.27 × 266,516.10
  4. Step 4: Simplify right side
    303,913.80x = 121,336,590,290.25
  5. Step 5: Solve for x
    x = 121,336,590,290.25/303,913.80
  6. Step 6: Final answer
    x = 399,246.73

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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.