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Finding the Fourth Proportional to 419,936.49, 630,167.18 and 170,618.49

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Solution

The fourth proportional to 419,936.49, 630,167.18 and 170,618.49 is: 256,034.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,936.49 : 630,167.18 = 170,618.49 : x
  2. Step 2: Convert to fraction form
    419,936.49/630,167.18 = 170,618.49/x
  3. Step 3: Cross multiply
    419,936.49x = 630,167.18 × 170,618.49
  4. Step 4: Simplify right side
    419,936.49x = 107,518,171,846.07
  5. Step 5: Solve for x
    x = 107,518,171,846.07/419,936.49
  6. Step 6: Final answer
    x = 256,034.36

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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.