Home / 220,929.40-331,394.10-121,396.60

Finding the Fourth Proportional to 220,929.40, 331,394.10 and 121,396.60

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Solution

The fourth proportional to 220,929.40, 331,394.10 and 121,396.60 is: 182,094.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,929.40 : 331,394.10 = 121,396.60 : x
  2. Step 2: Convert to fraction form
    220,929.40/331,394.10 = 121,396.60/x
  3. Step 3: Cross multiply
    220,929.40x = 331,394.10 × 121,396.60
  4. Step 4: Simplify right side
    220,929.40x = 40,230,117,000.06
  5. Step 5: Solve for x
    x = 40,230,117,000.06/220,929.40
  6. Step 6: Final answer
    x = 182,094.90

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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.