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Finding the Fourth Proportional to 485,441.88, 669,932.49 and 270,583.49

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Solution

The fourth proportional to 485,441.88, 669,932.49 and 270,583.49 is: 373,417.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,441.88 : 669,932.49 = 270,583.49 : x
  2. Step 2: Convert to fraction form
    485,441.88/669,932.49 = 270,583.49/x
  3. Step 3: Cross multiply
    485,441.88x = 669,932.49 × 270,583.49
  4. Step 4: Simplify right side
    485,441.88x = 181,272,667,858.93
  5. Step 5: Solve for x
    x = 181,272,667,858.93/485,441.88
  6. Step 6: Final answer
    x = 373,417.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.