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Finding the Fourth Proportional to 328,969.12, 493,452.06 and 79,651.12

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Solution

The fourth proportional to 328,969.12, 493,452.06 and 79,651.12 is: 119,476.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,969.12 : 493,452.06 = 79,651.12 : x
  2. Step 2: Convert to fraction form
    328,969.12/493,452.06 = 79,651.12/x
  3. Step 3: Cross multiply
    328,969.12x = 493,452.06 × 79,651.12
  4. Step 4: Simplify right side
    328,969.12x = 39,304,009,245.31
  5. Step 5: Solve for x
    x = 39,304,009,245.31/328,969.12
  6. Step 6: Final answer
    x = 119,476.29

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1.5x scale

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.