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Finding the Fourth Proportional to 631,271.88, 871,119.90 and 359,406.18

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Solution

The fourth proportional to 631,271.88, 871,119.90 and 359,406.18 is: 495,960.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,271.88 : 871,119.90 = 359,406.18 : x
  2. Step 2: Convert to fraction form
    631,271.88/871,119.90 = 359,406.18/x
  3. Step 3: Cross multiply
    631,271.88x = 871,119.90 × 359,406.18
  4. Step 4: Simplify right side
    631,271.88x = 313,085,875,580.98
  5. Step 5: Solve for x
    x = 313,085,875,580.98/631,271.88
  6. Step 6: Final answer
    x = 495,960.43

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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.