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Finding the Fourth Proportional to 404,579.20, 606,868.80 and 205,513.60

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Solution

The fourth proportional to 404,579.20, 606,868.80 and 205,513.60 is: 308,270.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,579.20 : 606,868.80 = 205,513.60 : x
  2. Step 2: Convert to fraction form
    404,579.20/606,868.80 = 205,513.60/x
  3. Step 3: Cross multiply
    404,579.20x = 606,868.80 × 205,513.60
  4. Step 4: Simplify right side
    404,579.20x = 124,719,791,815.68
  5. Step 5: Solve for x
    x = 124,719,791,815.68/404,579.20
  6. Step 6: Final answer
    x = 308,270.40

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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.