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Finding the Fourth Proportional to 303,790.20, 455,029.20 and 264,424.20

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Solution

The fourth proportional to 303,790.20, 455,029.20 and 264,424.20 is: 396,065.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,790.20 : 455,029.20 = 264,424.20 : x
  2. Step 2: Convert to fraction form
    303,790.20/455,029.20 = 264,424.20/x
  3. Step 3: Cross multiply
    303,790.20x = 455,029.20 × 264,424.20
  4. Step 4: Simplify right side
    303,790.20x = 120,320,732,186.64
  5. Step 5: Solve for x
    x = 120,320,732,186.64/303,790.20
  6. Step 6: Final answer
    x = 396,065.22

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1.5x scale

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.