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Finding the Fourth Proportional to 231,120.70, 346,713.45 and 90,846.70

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Solution

The fourth proportional to 231,120.70, 346,713.45 and 90,846.70 is: 136,282.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,120.70 : 346,713.45 = 90,846.70 : x
  2. Step 2: Convert to fraction form
    231,120.70/346,713.45 = 90,846.70/x
  3. Step 3: Cross multiply
    231,120.70x = 346,713.45 × 90,846.70
  4. Step 4: Simplify right side
    231,120.70x = 31,497,772,778.12
  5. Step 5: Solve for x
    x = 31,497,772,778.12/231,120.70
  6. Step 6: Final answer
    x = 136,282.79

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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.