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Finding the Fourth Proportional to 252,842.60, 379,316.70 and 84,356.20

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Solution

The fourth proportional to 252,842.60, 379,316.70 and 84,356.20 is: 126,551.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,842.60 : 379,316.70 = 84,356.20 : x
  2. Step 2: Convert to fraction form
    252,842.60/379,316.70 = 84,356.20/x
  3. Step 3: Cross multiply
    252,842.60x = 379,316.70 × 84,356.20
  4. Step 4: Simplify right side
    252,842.60x = 31,997,715,408.54
  5. Step 5: Solve for x
    x = 31,997,715,408.54/252,842.60
  6. Step 6: Final answer
    x = 126,551.92

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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.