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Finding the Fourth Proportional to 303,743.80, 455,226.90 and 268,751.80

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Solution

The fourth proportional to 303,743.80, 455,226.90 and 268,751.80 is: 402,783.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,743.80 : 455,226.90 = 268,751.80 : x
  2. Step 2: Convert to fraction form
    303,743.80/455,226.90 = 268,751.80/x
  3. Step 3: Cross multiply
    303,743.80x = 455,226.90 × 268,751.80
  4. Step 4: Simplify right side
    303,743.80x = 122,343,048,783.42
  5. Step 5: Solve for x
    x = 122,343,048,783.42/303,743.80
  6. Step 6: Final answer
    x = 402,783.69

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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.