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Finding the Fourth Proportional to 329,871.80, 494,807.70 and 251,139.80

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Solution

The fourth proportional to 329,871.80, 494,807.70 and 251,139.80 is: 376,709.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,871.80 : 494,807.70 = 251,139.80 : x
  2. Step 2: Convert to fraction form
    329,871.80/494,807.70 = 251,139.80/x
  3. Step 3: Cross multiply
    329,871.80x = 494,807.70 × 251,139.80
  4. Step 4: Simplify right side
    329,871.80x = 124,265,906,816.46
  5. Step 5: Solve for x
    x = 124,265,906,816.46/329,871.80
  6. Step 6: Final answer
    x = 376,709.70

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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.