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Finding the Fourth Proportional to 326,798.64, 490,617.76 and 251,966.32

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Solution

The fourth proportional to 326,798.64, 490,617.76 and 251,966.32 is: 378,273.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,798.64 : 490,617.76 = 251,966.32 : x
  2. Step 2: Convert to fraction form
    326,798.64/490,617.76 = 251,966.32/x
  3. Step 3: Cross multiply
    326,798.64x = 490,617.76 × 251,966.32
  4. Step 4: Simplify right side
    326,798.64x = 123,619,151,513.84
  5. Step 5: Solve for x
    x = 123,619,151,513.84/326,798.64
  6. Step 6: Final answer
    x = 378,273.15

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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.