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Finding the Fourth Proportional to 239,626.68, 359,495.30 and 71,143.21

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Solution

The fourth proportional to 239,626.68, 359,495.30 and 71,143.21 is: 106,731.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,626.68 : 359,495.30 = 71,143.21 : x
  2. Step 2: Convert to fraction form
    239,626.68/359,495.30 = 71,143.21/x
  3. Step 3: Cross multiply
    239,626.68x = 359,495.30 × 71,143.21
  4. Step 4: Simplify right side
    239,626.68x = 25,575,649,621.91
  5. Step 5: Solve for x
    x = 25,575,649,621.91/239,626.68
  6. Step 6: Final answer
    x = 106,731.23

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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.