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Finding the Fourth Proportional to 419,935.36, 630,164.28 and 170,617.36

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Solution

The fourth proportional to 419,935.36, 630,164.28 and 170,617.36 is: 256,032.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,935.36 : 630,164.28 = 170,617.36 : x
  2. Step 2: Convert to fraction form
    419,935.36/630,164.28 = 170,617.36/x
  3. Step 3: Cross multiply
    419,935.36x = 630,164.28 × 170,617.36
  4. Step 4: Simplify right side
    419,935.36x = 107,516,967,247.42
  5. Step 5: Solve for x
    x = 107,516,967,247.42/419,935.36
  6. Step 6: Final answer
    x = 256,032.18

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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.