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Finding the Fourth Proportional to 239,375.40, 358,976.70 and 121,007.40

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Solution

The fourth proportional to 239,375.40, 358,976.70 and 121,007.40 is: 181,467.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,375.40 : 358,976.70 = 121,007.40 : x
  2. Step 2: Convert to fraction form
    239,375.40/358,976.70 = 121,007.40/x
  3. Step 3: Cross multiply
    239,375.40x = 358,976.70 × 121,007.40
  4. Step 4: Simplify right side
    239,375.40x = 43,438,837,127.58
  5. Step 5: Solve for x
    x = 43,438,837,127.58/239,375.40
  6. Step 6: Final answer
    x = 181,467.42

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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.