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Finding the Fourth Proportional to 328,040.80, 491,186.40 and 328,040.80

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Solution

The fourth proportional to 328,040.80, 491,186.40 and 328,040.80 is: 491,186.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,040.80 : 491,186.40 = 328,040.80 : x
  2. Step 2: Convert to fraction form
    328,040.80/491,186.40 = 328,040.80/x
  3. Step 3: Cross multiply
    328,040.80x = 491,186.40 × 328,040.80
  4. Step 4: Simplify right side
    328,040.80x = 161,129,179,605.12
  5. Step 5: Solve for x
    x = 161,129,179,605.12/328,040.80
  6. Step 6: Final answer
    x = 491,186.40

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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.