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Finding the Fourth Proportional to 239,021.31, 358,448.31 and 70,496.88

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Solution

The fourth proportional to 239,021.31, 358,448.31 and 70,496.88 is: 105,720.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,021.31 : 358,448.31 = 70,496.88 : x
  2. Step 2: Convert to fraction form
    239,021.31/358,448.31 = 70,496.88/x
  3. Step 3: Cross multiply
    239,021.31x = 358,448.31 × 70,496.88
  4. Step 4: Simplify right side
    239,021.31x = 25,269,487,496.27
  5. Step 5: Solve for x
    x = 25,269,487,496.27/239,021.31
  6. Step 6: Final answer
    x = 105,720.65

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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.