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Finding the Fourth Proportional to 239,686.54, 359,579.01 and 71,191.86

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Solution

The fourth proportional to 239,686.54, 359,579.01 and 71,191.86 is: 106,802.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,686.54 : 359,579.01 = 71,191.86 : x
  2. Step 2: Convert to fraction form
    239,686.54/359,579.01 = 71,191.86/x
  3. Step 3: Cross multiply
    239,686.54x = 359,579.01 × 71,191.86
  4. Step 4: Simplify right side
    239,686.54x = 25,599,099,480.04
  5. Step 5: Solve for x
    x = 25,599,099,480.04/239,686.54
  6. Step 6: Final answer
    x = 106,802.41

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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.