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Finding the Fourth Proportional to 331,888.48, 497,778 and 142,379.44

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Solution

The fourth proportional to 331,888.48, 497,778 and 142,379.44 is: 213,545.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,888.48 : 497,778 = 142,379.44 : x
  2. Step 2: Convert to fraction form
    331,888.48/497,778 = 142,379.44/x
  3. Step 3: Cross multiply
    331,888.48x = 497,778 × 142,379.44
  4. Step 4: Simplify right side
    331,888.48x = 70,873,352,884.32
  5. Step 5: Solve for x
    x = 70,873,352,884.32/331,888.48
  6. Step 6: Final answer
    x = 213,545.69

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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.