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Finding the Fourth Proportional to 365,665.62, 548,400.14 and 128,977.14

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Solution

The fourth proportional to 365,665.62, 548,400.14 and 128,977.14 is: 193,431.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,665.62 : 548,400.14 = 128,977.14 : x
  2. Step 2: Convert to fraction form
    365,665.62/548,400.14 = 128,977.14/x
  3. Step 3: Cross multiply
    365,665.62x = 548,400.14 × 128,977.14
  4. Step 4: Simplify right side
    365,665.62x = 70,731,081,632.80
  5. Step 5: Solve for x
    x = 70,731,081,632.80/365,665.62
  6. Step 6: Final answer
    x = 193,431.04

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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.