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Finding the Fourth Proportional to 238,586.88, 357,870.97 and 80,815.33

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Solution

The fourth proportional to 238,586.88, 357,870.97 and 80,815.33 is: 121,219.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,586.88 : 357,870.97 = 80,815.33 : x
  2. Step 2: Convert to fraction form
    238,586.88/357,870.97 = 80,815.33/x
  3. Step 3: Cross multiply
    238,586.88x = 357,870.97 × 80,815.33
  4. Step 4: Simplify right side
    238,586.88x = 28,921,460,537.97
  5. Step 5: Solve for x
    x = 28,921,460,537.97/238,586.88
  6. Step 6: Final answer
    x = 121,219.83

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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.