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Finding the Fourth Proportional to 238,080.75, 357,121.13 and 71,868.75

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Solution

The fourth proportional to 238,080.75, 357,121.13 and 71,868.75 is: 107,803.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,080.75 : 357,121.13 = 71,868.75 : x
  2. Step 2: Convert to fraction form
    238,080.75/357,121.13 = 71,868.75/x
  3. Step 3: Cross multiply
    238,080.75x = 357,121.13 × 71,868.75
  4. Step 4: Simplify right side
    238,080.75x = 25,665,848,852.34
  5. Step 5: Solve for x
    x = 25,665,848,852.34/238,080.75
  6. Step 6: Final answer
    x = 107,803.13

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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.