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Finding the Fourth Proportional to 328,700.79, 493,125.08 and 104,074.65

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Solution

The fourth proportional to 328,700.79, 493,125.08 and 104,074.65 is: 156,135.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,700.79 : 493,125.08 = 104,074.65 : x
  2. Step 2: Convert to fraction form
    328,700.79/493,125.08 = 104,074.65/x
  3. Step 3: Cross multiply
    328,700.79x = 493,125.08 × 104,074.65
  4. Step 4: Simplify right side
    328,700.79x = 51,321,819,586.85
  5. Step 5: Solve for x
    x = 51,321,819,586.85/328,700.79
  6. Step 6: Final answer
    x = 156,135.37

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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.