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Finding the Fourth Proportional to 425,704.44, 638,371.59 and 122,031.72

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Solution

The fourth proportional to 425,704.44, 638,371.59 and 122,031.72 is: 182,994.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,704.44 : 638,371.59 = 122,031.72 : x
  2. Step 2: Convert to fraction form
    425,704.44/638,371.59 = 122,031.72/x
  3. Step 3: Cross multiply
    425,704.44x = 638,371.59 × 122,031.72
  4. Step 4: Simplify right side
    425,704.44x = 77,901,583,126.83
  5. Step 5: Solve for x
    x = 77,901,583,126.83/425,704.44
  6. Step 6: Final answer
    x = 182,994.53

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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.