Home / 329,276.20-494,144.70-142,421.80

Finding the Fourth Proportional to 329,276.20, 494,144.70 and 142,421.80

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Solution

The fourth proportional to 329,276.20, 494,144.70 and 142,421.80 is: 213,732.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,276.20 : 494,144.70 = 142,421.80 : x
  2. Step 2: Convert to fraction form
    329,276.20/494,144.70 = 142,421.80/x
  3. Step 3: Cross multiply
    329,276.20x = 494,144.70 × 142,421.80
  4. Step 4: Simplify right side
    329,276.20x = 70,376,977,634.46
  5. Step 5: Solve for x
    x = 70,376,977,634.46/329,276.20
  6. Step 6: Final answer
    x = 213,732.35

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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.