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Finding the Fourth Proportional to 328,912.65, 493,399.96 and 92,254.34

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Solution

The fourth proportional to 328,912.65, 493,399.96 and 92,254.34 is: 138,390.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,912.65 : 493,399.96 = 92,254.34 : x
  2. Step 2: Convert to fraction form
    328,912.65/493,399.96 = 92,254.34/x
  3. Step 3: Cross multiply
    328,912.65x = 493,399.96 × 92,254.34
  4. Step 4: Simplify right side
    328,912.65x = 45,518,288,668.69
  5. Step 5: Solve for x
    x = 45,518,288,668.69/328,912.65
  6. Step 6: Final answer
    x = 138,390.20

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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.