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Finding the Fourth Proportional to 365,428.80, 548,143.20 and 325,339.20

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Solution

The fourth proportional to 365,428.80, 548,143.20 and 325,339.20 is: 488,008.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,428.80 : 548,143.20 = 325,339.20 : x
  2. Step 2: Convert to fraction form
    365,428.80/548,143.20 = 325,339.20/x
  3. Step 3: Cross multiply
    365,428.80x = 548,143.20 × 325,339.20
  4. Step 4: Simplify right side
    365,428.80x = 178,332,470,173.44
  5. Step 5: Solve for x
    x = 178,332,470,173.44/365,428.80
  6. Step 6: Final answer
    x = 488,008.80

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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.