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Finding the Fourth Proportional to 238,751.50, 358,067.70 and 70,238.28

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Solution

The fourth proportional to 238,751.50, 358,067.70 and 70,238.28 is: 105,339.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,751.50 : 358,067.70 = 70,238.28 : x
  2. Step 2: Convert to fraction form
    238,751.50/358,067.70 = 70,238.28/x
  3. Step 3: Cross multiply
    238,751.50x = 358,067.70 × 70,238.28
  4. Step 4: Simplify right side
    238,751.50x = 25,150,059,371.56
  5. Step 5: Solve for x
    x = 25,150,059,371.56/238,751.50
  6. Step 6: Final answer
    x = 105,339.90

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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.