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Finding the Fourth Proportional to 328,536.20, 492,767.85 and 91,902.80

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Solution

The fourth proportional to 328,536.20, 492,767.85 and 91,902.80 is: 137,844.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,536.20 : 492,767.85 = 91,902.80 : x
  2. Step 2: Convert to fraction form
    328,536.20/492,767.85 = 91,902.80/x
  3. Step 3: Cross multiply
    328,536.20x = 492,767.85 × 91,902.80
  4. Step 4: Simplify right side
    328,536.20x = 45,286,745,164.98
  5. Step 5: Solve for x
    x = 45,286,745,164.98/328,536.20
  6. Step 6: Final answer
    x = 137,844.00

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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.