Home / 231,128.20-346,319.70-130,990.60

Finding the Fourth Proportional to 231,128.20, 346,319.70 and 130,990.60

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Solution

The fourth proportional to 231,128.20, 346,319.70 and 130,990.60 is: 196,274.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,128.20 : 346,319.70 = 130,990.60 : x
  2. Step 2: Convert to fraction form
    231,128.20/346,319.70 = 130,990.60/x
  3. Step 3: Cross multiply
    231,128.20x = 346,319.70 × 130,990.60
  4. Step 4: Simplify right side
    231,128.20x = 45,364,625,294.82
  5. Step 5: Solve for x
    x = 45,364,625,294.82/231,128.20
  6. Step 6: Final answer
    x = 196,274.73

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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.