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Finding the Fourth Proportional to 328,475.70, 492,713.55 and 275,331.60

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Solution

The fourth proportional to 328,475.70, 492,713.55 and 275,331.60 is: 412,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,475.70 : 492,713.55 = 275,331.60 : x
  2. Step 2: Convert to fraction form
    328,475.70/492,713.55 = 275,331.60/x
  3. Step 3: Cross multiply
    328,475.70x = 492,713.55 × 275,331.60
  4. Step 4: Simplify right side
    328,475.70x = 135,659,610,063.18
  5. Step 5: Solve for x
    x = 135,659,610,063.18/328,475.70
  6. Step 6: Final answer
    x = 412,997.40

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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.