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Finding the Fourth Proportional to 455,065.64, 628,115.49 and 264,140.54

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Solution

The fourth proportional to 455,065.64, 628,115.49 and 264,140.54 is: 364,586.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,065.64 : 628,115.49 = 264,140.54 : x
  2. Step 2: Convert to fraction form
    455,065.64/628,115.49 = 264,140.54/x
  3. Step 3: Cross multiply
    455,065.64x = 628,115.49 × 264,140.54
  4. Step 4: Simplify right side
    455,065.64x = 165,910,764,710.97
  5. Step 5: Solve for x
    x = 165,910,764,710.97/455,065.64
  6. Step 6: Final answer
    x = 364,586.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.