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Finding the Fourth Proportional to 237,351.28, 355,981.60 and 71,139.28

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Solution

The fourth proportional to 237,351.28, 355,981.60 and 71,139.28 is: 106,695.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,351.28 : 355,981.60 = 71,139.28 : x
  2. Step 2: Convert to fraction form
    237,351.28/355,981.60 = 71,139.28/x
  3. Step 3: Cross multiply
    237,351.28x = 355,981.60 × 71,139.28
  4. Step 4: Simplify right side
    237,351.28x = 25,324,274,717.25
  5. Step 5: Solve for x
    x = 25,324,274,717.25/237,351.28
  6. Step 6: Final answer
    x = 106,695.34

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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.