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Finding the Fourth Proportional to 639,313.38, 959,398.11 and 265,336.74

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Solution

The fourth proportional to 639,313.38, 959,398.11 and 265,336.74 is: 398,182.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,313.38 : 959,398.11 = 265,336.74 : x
  2. Step 2: Convert to fraction form
    639,313.38/959,398.11 = 265,336.74/x
  3. Step 3: Cross multiply
    639,313.38x = 959,398.11 × 265,336.74
  4. Step 4: Simplify right side
    639,313.38x = 254,563,566,869.56
  5. Step 5: Solve for x
    x = 254,563,566,869.56/639,313.38
  6. Step 6: Final answer
    x = 398,182.76

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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.