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Finding the Fourth Proportional to 262,410.40, 393,615.60 and 242,135.20

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Solution

The fourth proportional to 262,410.40, 393,615.60 and 242,135.20 is: 363,202.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,410.40 : 393,615.60 = 242,135.20 : x
  2. Step 2: Convert to fraction form
    262,410.40/393,615.60 = 242,135.20/x
  3. Step 3: Cross multiply
    262,410.40x = 393,615.60 × 242,135.20
  4. Step 4: Simplify right side
    262,410.40x = 95,308,192,029.12
  5. Step 5: Solve for x
    x = 95,308,192,029.12/262,410.40
  6. Step 6: Final answer
    x = 363,202.80

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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.