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Finding the Fourth Proportional to 251,634.80, 377,452.20 and 139,660.40

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Solution

The fourth proportional to 251,634.80, 377,452.20 and 139,660.40 is: 209,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,634.80 : 377,452.20 = 139,660.40 : x
  2. Step 2: Convert to fraction form
    251,634.80/377,452.20 = 139,660.40/x
  3. Step 3: Cross multiply
    251,634.80x = 377,452.20 × 139,660.40
  4. Step 4: Simplify right side
    251,634.80x = 52,715,125,232.88
  5. Step 5: Solve for x
    x = 52,715,125,232.88/251,634.80
  6. Step 6: Final answer
    x = 209,490.60

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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.