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Finding the Fourth Proportional to 270,072.20, 404,330.70 and 242,078.60

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Solution

The fourth proportional to 270,072.20, 404,330.70 and 242,078.60 is: 362,420.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,072.20 : 404,330.70 = 242,078.60 : x
  2. Step 2: Convert to fraction form
    270,072.20/404,330.70 = 242,078.60/x
  3. Step 3: Cross multiply
    270,072.20x = 404,330.70 × 242,078.60
  4. Step 4: Simplify right side
    270,072.20x = 97,879,809,793.02
  5. Step 5: Solve for x
    x = 97,879,809,793.02/270,072.20
  6. Step 6: Final answer
    x = 362,420.90

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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.