Home / 231,627.40-346,857.90-221,129.80

Finding the Fourth Proportional to 231,627.40, 346,857.90 and 221,129.80

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Solution

The fourth proportional to 231,627.40, 346,857.90 and 221,129.80 is: 331,137.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,627.40 : 346,857.90 = 221,129.80 : x
  2. Step 2: Convert to fraction form
    231,627.40/346,857.90 = 221,129.80/x
  3. Step 3: Cross multiply
    231,627.40x = 346,857.90 × 221,129.80
  4. Step 4: Simplify right side
    231,627.40x = 76,700,618,055.42
  5. Step 5: Solve for x
    x = 76,700,618,055.42/231,627.40
  6. Step 6: Final answer
    x = 331,137.93

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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.