Home / 814,089.88-1,221,193.28-215,045.20

Finding the Fourth Proportional to 814,089.88, 1,221,193.28 and 215,045.20

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Solution

The fourth proportional to 814,089.88, 1,221,193.28 and 215,045.20 is: 322,583.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,089.88 : 1,221,193.28 = 215,045.20 : x
  2. Step 2: Convert to fraction form
    814,089.88/1,221,193.28 = 215,045.20/x
  3. Step 3: Cross multiply
    814,089.88x = 1,221,193.28 × 215,045.20
  4. Step 4: Simplify right side
    814,089.88x = 262,611,753,136.26
  5. Step 5: Solve for x
    x = 262,611,753,136.26/814,089.88
  6. Step 6: Final answer
    x = 322,583.24

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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.