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Finding the Fourth Proportional to 326,785.63, 490,598.23 and 251,953.31

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Solution

The fourth proportional to 326,785.63, 490,598.23 and 251,953.31 is: 378,253.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,785.63 : 490,598.23 = 251,953.31 : x
  2. Step 2: Convert to fraction form
    326,785.63/490,598.23 = 251,953.31/x
  3. Step 3: Cross multiply
    326,785.63x = 490,598.23 × 251,953.31
  4. Step 4: Simplify right side
    326,785.63x = 123,607,847,928.64
  5. Step 5: Solve for x
    x = 123,607,847,928.64/326,785.63
  6. Step 6: Final answer
    x = 378,253.62

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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.