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Finding the Fourth Proportional to 258,425.82, 356,800.95 and 231,116.22

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Solution

The fourth proportional to 258,425.82, 356,800.95 and 231,116.22 is: 319,095.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,425.82 : 356,800.95 = 231,116.22 : x
  2. Step 2: Convert to fraction form
    258,425.82/356,800.95 = 231,116.22/x
  3. Step 3: Cross multiply
    258,425.82x = 356,800.95 × 231,116.22
  4. Step 4: Simplify right side
    258,425.82x = 82,462,486,856.41
  5. Step 5: Solve for x
    x = 82,462,486,856.41/258,425.82
  6. Step 6: Final answer
    x = 319,095.39

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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.