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Finding the Fourth Proportional to 252,705.84, 378,932 and 84,166.92

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Solution

The fourth proportional to 252,705.84, 378,932 and 84,166.92 is: 126,208.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,705.84 : 378,932 = 84,166.92 : x
  2. Step 2: Convert to fraction form
    252,705.84/378,932 = 84,166.92/x
  3. Step 3: Cross multiply
    252,705.84x = 378,932 × 84,166.92
  4. Step 4: Simplify right side
    252,705.84x = 31,893,539,329.44
  5. Step 5: Solve for x
    x = 31,893,539,329.44/252,705.84
  6. Step 6: Final answer
    x = 126,208.16

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1.5x scale

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.