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Finding the Fourth Proportional to 328,544.40, 492,816.60 and 298,995.60

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Solution

The fourth proportional to 328,544.40, 492,816.60 and 298,995.60 is: 448,493.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,544.40 : 492,816.60 = 298,995.60 : x
  2. Step 2: Convert to fraction form
    328,544.40/492,816.60 = 298,995.60/x
  3. Step 3: Cross multiply
    328,544.40x = 492,816.60 × 298,995.60
  4. Step 4: Simplify right side
    328,544.40x = 147,349,995,006.96
  5. Step 5: Solve for x
    x = 147,349,995,006.96/328,544.40
  6. Step 6: Final answer
    x = 448,493.40

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Similar ratio
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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.