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Finding the Fourth Proportional to 328,523.40, 492,785.10 and 222,769.80

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Solution

The fourth proportional to 328,523.40, 492,785.10 and 222,769.80 is: 334,154.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,523.40 : 492,785.10 = 222,769.80 : x
  2. Step 2: Convert to fraction form
    328,523.40/492,785.10 = 222,769.80/x
  3. Step 3: Cross multiply
    328,523.40x = 492,785.10 × 222,769.80
  4. Step 4: Simplify right side
    328,523.40x = 109,777,638,169.98
  5. Step 5: Solve for x
    x = 109,777,638,169.98/328,523.40
  6. Step 6: Final answer
    x = 334,154.70

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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.