Home / 299,782.40-449,895.36-142,011.20

Finding the Fourth Proportional to 299,782.40, 449,895.36 and 142,011.20

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Solution

The fourth proportional to 299,782.40, 449,895.36 and 142,011.20 is: 213,121.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,782.40 : 449,895.36 = 142,011.20 : x
  2. Step 2: Convert to fraction form
    299,782.40/449,895.36 = 142,011.20/x
  3. Step 3: Cross multiply
    299,782.40x = 449,895.36 × 142,011.20
  4. Step 4: Simplify right side
    299,782.40x = 63,890,179,948.03
  5. Step 5: Solve for x
    x = 63,890,179,948.03/299,782.40
  6. Step 6: Final answer
    x = 213,121.85

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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.