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Finding the Fourth Proportional to 238,250.31, 328,790.75 and 130,820.79

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Solution

The fourth proportional to 238,250.31, 328,790.75 and 130,820.79 is: 180,535.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,250.31 : 328,790.75 = 130,820.79 : x
  2. Step 2: Convert to fraction form
    238,250.31/328,790.75 = 130,820.79/x
  3. Step 3: Cross multiply
    238,250.31x = 328,790.75 × 130,820.79
  4. Step 4: Simplify right side
    238,250.31x = 43,012,665,659.69
  5. Step 5: Solve for x
    x = 43,012,665,659.69/238,250.31
  6. Step 6: Final answer
    x = 180,535.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.