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Finding the Fourth Proportional to 425,686.84, 638,682.92 and 182,425.84

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Solution

The fourth proportional to 425,686.84, 638,682.92 and 182,425.84 is: 273,704.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,686.84 : 638,682.92 = 182,425.84 : x
  2. Step 2: Convert to fraction form
    425,686.84/638,682.92 = 182,425.84/x
  3. Step 3: Cross multiply
    425,686.84x = 638,682.92 × 182,425.84
  4. Step 4: Simplify right side
    425,686.84x = 116,512,268,174.65
  5. Step 5: Solve for x
    x = 116,512,268,174.65/425,686.84
  6. Step 6: Final answer
    x = 273,704.18

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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.