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Finding the Fourth Proportional to 321,648, 443,874.60 and 187,537.92

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Solution

The fourth proportional to 321,648, 443,874.60 and 187,537.92 is: 258,802.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,648 : 443,874.60 = 187,537.92 : x
  2. Step 2: Convert to fraction form
    321,648/443,874.60 = 187,537.92/x
  3. Step 3: Cross multiply
    321,648x = 443,874.60 × 187,537.92
  4. Step 4: Simplify right side
    321,648x = 83,243,319,224.83
  5. Step 5: Solve for x
    x = 83,243,319,224.83/321,648
  6. Step 6: Final answer
    x = 258,802.54

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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.