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Finding the Fourth Proportional to 485,939.82, 728,914.62 and 170,404.32

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Solution

The fourth proportional to 485,939.82, 728,914.62 and 170,404.32 is: 255,608.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,939.82 : 728,914.62 = 170,404.32 : x
  2. Step 2: Convert to fraction form
    485,939.82/728,914.62 = 170,404.32/x
  3. Step 3: Cross multiply
    485,939.82x = 728,914.62 × 170,404.32
  4. Step 4: Simplify right side
    485,939.82x = 124,210,200,159.16
  5. Step 5: Solve for x
    x = 124,210,200,159.16/485,939.82
  6. Step 6: Final answer
    x = 255,608.19

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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.