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Finding the Fourth Proportional to 631,168.90, 871,020.02 and 344,697.42

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Solution

The fourth proportional to 631,168.90, 871,020.02 and 344,697.42 is: 475,686.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,168.90 : 871,020.02 = 344,697.42 : x
  2. Step 2: Convert to fraction form
    631,168.90/871,020.02 = 344,697.42/x
  3. Step 3: Cross multiply
    631,168.90x = 871,020.02 × 344,697.42
  4. Step 4: Simplify right side
    631,168.90x = 300,238,353,662.35
  5. Step 5: Solve for x
    x = 300,238,353,662.35/631,168.90
  6. Step 6: Final answer
    x = 475,686.23

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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.