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Finding the Fourth Proportional to 261,788.20, 392,682.30 and 242,542.60

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Solution

The fourth proportional to 261,788.20, 392,682.30 and 242,542.60 is: 363,813.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,788.20 : 392,682.30 = 242,542.60 : x
  2. Step 2: Convert to fraction form
    261,788.20/392,682.30 = 242,542.60/x
  3. Step 3: Cross multiply
    261,788.20x = 392,682.30 × 242,542.60
  4. Step 4: Simplify right side
    261,788.20x = 95,242,186,015.98
  5. Step 5: Solve for x
    x = 95,242,186,015.98/261,788.20
  6. Step 6: Final answer
    x = 363,813.90

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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.