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Finding the Fourth Proportional to 439,917, 607,087.08 and 238,713

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Solution

The fourth proportional to 439,917, 607,087.08 and 238,713 is: 329,424.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,917 : 607,087.08 = 238,713 : x
  2. Step 2: Convert to fraction form
    439,917/607,087.08 = 238,713/x
  3. Step 3: Cross multiply
    439,917x = 607,087.08 × 238,713
  4. Step 4: Simplify right side
    439,917x = 144,919,578,128.04
  5. Step 5: Solve for x
    x = 144,919,578,128.04/439,917
  6. Step 6: Final answer
    x = 329,424.82

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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.