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Finding the Fourth Proportional to 258,260.88, 356,375.53 and 239,217.58

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Solution

The fourth proportional to 258,260.88, 356,375.53 and 239,217.58 is: 330,097.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,260.88 : 356,375.53 = 239,217.58 : x
  2. Step 2: Convert to fraction form
    258,260.88/356,375.53 = 239,217.58/x
  3. Step 3: Cross multiply
    258,260.88x = 356,375.53 × 239,217.58
  4. Step 4: Simplify right side
    258,260.88x = 85,251,291,857.82
  5. Step 5: Solve for x
    x = 85,251,291,857.82/258,260.88
  6. Step 6: Final answer
    x = 330,097.58

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1.5x scale

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.