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Finding the Fourth Proportional to 365,665.74, 548,400.33 and 128,977.26

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Solution

The fourth proportional to 365,665.74, 548,400.33 and 128,977.26 is: 193,431.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,665.74 : 548,400.33 = 128,977.26 : x
  2. Step 2: Convert to fraction form
    365,665.74/548,400.33 = 128,977.26/x
  3. Step 3: Cross multiply
    365,665.74x = 548,400.33 × 128,977.26
  4. Step 4: Simplify right side
    365,665.74x = 70,731,171,946.50
  5. Step 5: Solve for x
    x = 70,731,171,946.50/365,665.74
  6. Step 6: Final answer
    x = 193,431.22

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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.