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Finding the Fourth Proportional to 239,388.30, 359,134.98 and 70,921.80

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Solution

The fourth proportional to 239,388.30, 359,134.98 and 70,921.80 is: 106,398.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,388.30 : 359,134.98 = 70,921.80 : x
  2. Step 2: Convert to fraction form
    239,388.30/359,134.98 = 70,921.80/x
  3. Step 3: Cross multiply
    239,388.30x = 359,134.98 × 70,921.80
  4. Step 4: Simplify right side
    239,388.30x = 25,470,499,224.56
  5. Step 5: Solve for x
    x = 25,470,499,224.56/239,388.30
  6. Step 6: Final answer
    x = 106,398.26

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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.