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Finding the Fourth Proportional to 328,034.20, 492,092.98 and 128,328.98

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Solution

The fourth proportional to 328,034.20, 492,092.98 and 128,328.98 is: 192,509.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,034.20 : 492,092.98 = 128,328.98 : x
  2. Step 2: Convert to fraction form
    328,034.20/492,092.98 = 128,328.98/x
  3. Step 3: Cross multiply
    328,034.20x = 492,092.98 × 128,328.98
  4. Step 4: Simplify right side
    328,034.20x = 63,149,790,188.56
  5. Step 5: Solve for x
    x = 63,149,790,188.56/328,034.20
  6. Step 6: Final answer
    x = 192,509.78

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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.