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Finding the Fourth Proportional to 252,111.84, 378,166.68 and 74,619.60

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Solution

The fourth proportional to 252,111.84, 378,166.68 and 74,619.60 is: 111,929.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,111.84 : 378,166.68 = 74,619.60 : x
  2. Step 2: Convert to fraction form
    252,111.84/378,166.68 = 74,619.60/x
  3. Step 3: Cross multiply
    252,111.84x = 378,166.68 × 74,619.60
  4. Step 4: Simplify right side
    252,111.84x = 28,218,646,394.93
  5. Step 5: Solve for x
    x = 28,218,646,394.93/252,111.84
  6. Step 6: Final answer
    x = 111,929.08

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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.