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Finding the Fourth Proportional to 238,054.40, 356,390.40 and 231,142.40

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Solution

The fourth proportional to 238,054.40, 356,390.40 and 231,142.40 is: 346,042.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,054.40 : 356,390.40 = 231,142.40 : x
  2. Step 2: Convert to fraction form
    238,054.40/356,390.40 = 231,142.40/x
  3. Step 3: Cross multiply
    238,054.40x = 356,390.40 × 231,142.40
  4. Step 4: Simplify right side
    238,054.40x = 82,376,932,392.96
  5. Step 5: Solve for x
    x = 82,376,932,392.96/238,054.40
  6. Step 6: Final answer
    x = 346,042.47

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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.