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Finding the Fourth Proportional to 485,896.32, 728,849.34 and 170,360.82

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Solution

The fourth proportional to 485,896.32, 728,849.34 and 170,360.82 is: 255,542.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,896.32 : 728,849.34 = 170,360.82 : x
  2. Step 2: Convert to fraction form
    485,896.32/728,849.34 = 170,360.82/x
  3. Step 3: Cross multiply
    485,896.32x = 728,849.34 × 170,360.82
  4. Step 4: Simplify right side
    485,896.32x = 124,167,371,218.86
  5. Step 5: Solve for x
    x = 124,167,371,218.86/485,896.32
  6. Step 6: Final answer
    x = 255,542.93

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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.