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Finding the Fourth Proportional to 279,510.86, 385,779.60 and 177,654.98

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Solution

The fourth proportional to 279,510.86, 385,779.60 and 177,654.98 is: 245,198.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,510.86 : 385,779.60 = 177,654.98 : x
  2. Step 2: Convert to fraction form
    279,510.86/385,779.60 = 177,654.98/x
  3. Step 3: Cross multiply
    279,510.86x = 385,779.60 × 177,654.98
  4. Step 4: Simplify right side
    279,510.86x = 68,535,667,122.41
  5. Step 5: Solve for x
    x = 68,535,667,122.41/279,510.86
  6. Step 6: Final answer
    x = 245,198.58

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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.