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Finding the Fourth Proportional to 485,456.77, 669,939.15 and 270,573.77

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Solution

The fourth proportional to 485,456.77, 669,939.15 and 270,573.77 is: 373,396.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,456.77 : 669,939.15 = 270,573.77 : x
  2. Step 2: Convert to fraction form
    485,456.77/669,939.15 = 270,573.77/x
  3. Step 3: Cross multiply
    485,456.77x = 669,939.15 × 270,573.77
  4. Step 4: Simplify right side
    485,456.77x = 181,267,961,486.10
  5. Step 5: Solve for x
    x = 181,267,961,486.10/485,456.77
  6. Step 6: Final answer
    x = 373,396.71

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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.