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Finding the Fourth Proportional to 231,200.80, 346,714.80 and 90,930.40

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Solution

The fourth proportional to 231,200.80, 346,714.80 and 90,930.40 is: 136,361.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,200.80 : 346,714.80 = 90,930.40 : x
  2. Step 2: Convert to fraction form
    231,200.80/346,714.80 = 90,930.40/x
  3. Step 3: Cross multiply
    231,200.80x = 346,714.80 × 90,930.40
  4. Step 4: Simplify right side
    231,200.80x = 31,526,915,449.92
  5. Step 5: Solve for x
    x = 31,526,915,449.92/231,200.80
  6. Step 6: Final answer
    x = 136,361.62

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1.5x scale

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.