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Finding the Fourth Proportional to 242,605.20, 363,907.80 and 84,849.60

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Solution

The fourth proportional to 242,605.20, 363,907.80 and 84,849.60 is: 127,274.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,605.20 : 363,907.80 = 84,849.60 : x
  2. Step 2: Convert to fraction form
    242,605.20/363,907.80 = 84,849.60/x
  3. Step 3: Cross multiply
    242,605.20x = 363,907.80 × 84,849.60
  4. Step 4: Simplify right side
    242,605.20x = 30,877,431,266.88
  5. Step 5: Solve for x
    x = 30,877,431,266.88/242,605.20
  6. Step 6: Final answer
    x = 127,274.40

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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.