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Finding the Fourth Proportional to 252,309, 378,536.56 and 74,820.29

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Solution

The fourth proportional to 252,309, 378,536.56 and 74,820.29 is: 112,252.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,309 : 378,536.56 = 74,820.29 : x
  2. Step 2: Convert to fraction form
    252,309/378,536.56 = 74,820.29/x
  3. Step 3: Cross multiply
    252,309x = 378,536.56 × 74,820.29
  4. Step 4: Simplify right side
    252,309x = 28,322,215,954.09
  5. Step 5: Solve for x
    x = 28,322,215,954.09/252,309
  6. Step 6: Final answer
    x = 112,252.10

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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.