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Finding the Fourth Proportional to 328,513.40, 492,770.10 and 222,759.80

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Solution

The fourth proportional to 328,513.40, 492,770.10 and 222,759.80 is: 334,139.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,513.40 : 492,770.10 = 222,759.80 : x
  2. Step 2: Convert to fraction form
    328,513.40/492,770.10 = 222,759.80/x
  3. Step 3: Cross multiply
    328,513.40x = 492,770.10 × 222,759.80
  4. Step 4: Simplify right side
    328,513.40x = 109,769,368,921.98
  5. Step 5: Solve for x
    x = 109,769,368,921.98/328,513.40
  6. Step 6: Final answer
    x = 334,139.70

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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.