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Finding the Fourth Proportional to 279,605.76, 385,587.72 and 187,932.48

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Solution

The fourth proportional to 279,605.76, 385,587.72 and 187,932.48 is: 259,166.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,605.76 : 385,587.72 = 187,932.48 : x
  2. Step 2: Convert to fraction form
    279,605.76/385,587.72 = 187,932.48/x
  3. Step 3: Cross multiply
    279,605.76x = 385,587.72 × 187,932.48
  4. Step 4: Simplify right side
    279,605.76x = 72,464,456,477.15
  5. Step 5: Solve for x
    x = 72,464,456,477.15/279,605.76
  6. Step 6: Final answer
    x = 259,166.54

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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.