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Finding the Fourth Proportional to 419,935.61, 630,164.66 and 170,617.61

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Solution

The fourth proportional to 419,935.61, 630,164.66 and 170,617.61 is: 256,032.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,935.61 : 630,164.66 = 170,617.61 : x
  2. Step 2: Convert to fraction form
    419,935.61/630,164.66 = 170,617.61/x
  3. Step 3: Cross multiply
    419,935.61x = 630,164.66 × 170,617.61
  4. Step 4: Simplify right side
    419,935.61x = 107,517,188,195.66
  5. Step 5: Solve for x
    x = 107,517,188,195.66/419,935.61
  6. Step 6: Final answer
    x = 256,032.56

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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.