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Finding the Fourth Proportional to 455,776.42, 628,939.13 and 251,825.10

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Solution

The fourth proportional to 455,776.42, 628,939.13 and 251,825.10 is: 347,500.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,776.42 : 628,939.13 = 251,825.10 : x
  2. Step 2: Convert to fraction form
    455,776.42/628,939.13 = 251,825.10/x
  3. Step 3: Cross multiply
    455,776.42x = 628,939.13 × 251,825.10
  4. Step 4: Simplify right side
    455,776.42x = 158,382,659,306.16
  5. Step 5: Solve for x
    x = 158,382,659,306.16/455,776.42
  6. Step 6: Final answer
    x = 347,500.78

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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.