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Finding the Fourth Proportional to 425,467.85, 638,277.66 and 141,175.44

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Solution

The fourth proportional to 425,467.85, 638,277.66 and 141,175.44 is: 211,788.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,467.85 : 638,277.66 = 141,175.44 : x
  2. Step 2: Convert to fraction form
    425,467.85/638,277.66 = 141,175.44/x
  3. Step 3: Cross multiply
    425,467.85x = 638,277.66 × 141,175.44
  4. Step 4: Simplify right side
    425,467.85x = 90,109,129,492.67
  5. Step 5: Solve for x
    x = 90,109,129,492.67/425,467.85
  6. Step 6: Final answer
    x = 211,788.34

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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.