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Finding the Fourth Proportional to 631,224.48, 871,095.36 and 359,309.88

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Solution

The fourth proportional to 631,224.48, 871,095.36 and 359,309.88 is: 495,850.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,224.48 : 871,095.36 = 359,309.88 : x
  2. Step 2: Convert to fraction form
    631,224.48/871,095.36 = 359,309.88/x
  3. Step 3: Cross multiply
    631,224.48x = 871,095.36 × 359,309.88
  4. Step 4: Simplify right side
    631,224.48x = 312,993,169,270.16
  5. Step 5: Solve for x
    x = 312,993,169,270.16/631,224.48
  6. Step 6: Final answer
    x = 495,850.81

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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.