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Finding the Fourth Proportional to 328,473.20, 492,709.80 and 275,329.10

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Solution

The fourth proportional to 328,473.20, 492,709.80 and 275,329.10 is: 412,993.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,473.20 : 492,709.80 = 275,329.10 : x
  2. Step 2: Convert to fraction form
    328,473.20/492,709.80 = 275,329.10/x
  3. Step 3: Cross multiply
    328,473.20x = 492,709.80 × 275,329.10
  4. Step 4: Simplify right side
    328,473.20x = 135,657,345,795.18
  5. Step 5: Solve for x
    x = 135,657,345,795.18/328,473.20
  6. Step 6: Final answer
    x = 412,993.65

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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.