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Finding the Fourth Proportional to 328,510.62, 492,766.74 and 91,852.92

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Solution

The fourth proportional to 328,510.62, 492,766.74 and 91,852.92 is: 137,779.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,510.62 : 492,766.74 = 91,852.92 : x
  2. Step 2: Convert to fraction form
    328,510.62/492,766.74 = 91,852.92/x
  3. Step 3: Cross multiply
    328,510.62x = 492,766.74 × 91,852.92
  4. Step 4: Simplify right side
    328,510.62x = 45,262,063,947.88
  5. Step 5: Solve for x
    x = 45,262,063,947.88/328,510.62
  6. Step 6: Final answer
    x = 137,779.61

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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.