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Finding the Fourth Proportional to 279,510.36, 385,778.91 and 177,654.48

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Solution

The fourth proportional to 279,510.36, 385,778.91 and 177,654.48 is: 245,197.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,510.36 : 385,778.91 = 177,654.48 : x
  2. Step 2: Convert to fraction form
    279,510.36/385,778.91 = 177,654.48/x
  3. Step 3: Cross multiply
    279,510.36x = 385,778.91 × 177,654.48
  4. Step 4: Simplify right side
    279,510.36x = 68,535,351,651.02
  5. Step 5: Solve for x
    x = 68,535,351,651.02/279,510.36
  6. Step 6: Final answer
    x = 245,197.89

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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.