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Finding the Fourth Proportional to 631,167.90, 871,018.64 and 344,696.42

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Solution

The fourth proportional to 631,167.90, 871,018.64 and 344,696.42 is: 475,684.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,167.90 : 871,018.64 = 344,696.42 : x
  2. Step 2: Convert to fraction form
    631,167.90/871,018.64 = 344,696.42/x
  3. Step 3: Cross multiply
    631,167.90x = 871,018.64 × 344,696.42
  4. Step 4: Simplify right side
    631,167.90x = 300,237,000,882.69
  5. Step 5: Solve for x
    x = 300,237,000,882.69/631,167.90
  6. Step 6: Final answer
    x = 475,684.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.