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Finding the Fourth Proportional to 239,490.91, 359,175.06 and 70,971.90

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Solution

The fourth proportional to 239,490.91, 359,175.06 and 70,971.90 is: 106,439.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,490.91 : 359,175.06 = 70,971.90 : x
  2. Step 2: Convert to fraction form
    239,490.91/359,175.06 = 70,971.90/x
  3. Step 3: Cross multiply
    239,490.91x = 359,175.06 × 70,971.90
  4. Step 4: Simplify right side
    239,490.91x = 25,491,335,093.91
  5. Step 5: Solve for x
    x = 25,491,335,093.91/239,490.91
  6. Step 6: Final answer
    x = 106,439.68

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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.