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Finding the Fourth Proportional to 328,475.20, 492,712.80 and 275,331.10

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Solution

The fourth proportional to 328,475.20, 492,712.80 and 275,331.10 is: 412,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,475.20 : 492,712.80 = 275,331.10 : x
  2. Step 2: Convert to fraction form
    328,475.20/492,712.80 = 275,331.10/x
  3. Step 3: Cross multiply
    328,475.20x = 492,712.80 × 275,331.10
  4. Step 4: Simplify right side
    328,475.20x = 135,659,157,208.08
  5. Step 5: Solve for x
    x = 135,659,157,208.08/328,475.20
  6. Step 6: Final answer
    x = 412,996.65

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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.