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Finding the Fourth Proportional to 269,761.70, 404,642.55 and 238,657.70

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Solution

The fourth proportional to 269,761.70, 404,642.55 and 238,657.70 is: 357,986.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,761.70 : 404,642.55 = 238,657.70 : x
  2. Step 2: Convert to fraction form
    269,761.70/404,642.55 = 238,657.70/x
  3. Step 3: Cross multiply
    269,761.70x = 404,642.55 × 238,657.70
  4. Step 4: Simplify right side
    269,761.70x = 96,571,060,305.14
  5. Step 5: Solve for x
    x = 96,571,060,305.14/269,761.70
  6. Step 6: Final answer
    x = 357,986.55

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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.