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Finding the Fourth Proportional to 455,775.42, 628,937.75 and 251,824.10

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Solution

The fourth proportional to 455,775.42, 628,937.75 and 251,824.10 is: 347,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,775.42 : 628,937.75 = 251,824.10 : x
  2. Step 2: Convert to fraction form
    455,775.42/628,937.75 = 251,824.10/x
  3. Step 3: Cross multiply
    455,775.42x = 628,937.75 × 251,824.10
  4. Step 4: Simplify right side
    455,775.42x = 158,381,682,849.78
  5. Step 5: Solve for x
    x = 158,381,682,849.78/455,775.42
  6. Step 6: Final answer
    x = 347,499.40

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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.