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Finding the Fourth Proportional to 358,042.36, 537,005.22 and 121,379.80

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Solution

The fourth proportional to 358,042.36, 537,005.22 and 121,379.80 is: 182,049.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,042.36 : 537,005.22 = 121,379.80 : x
  2. Step 2: Convert to fraction form
    358,042.36/537,005.22 = 121,379.80/x
  3. Step 3: Cross multiply
    358,042.36x = 537,005.22 × 121,379.80
  4. Step 4: Simplify right side
    358,042.36x = 65,181,586,202.56
  5. Step 5: Solve for x
    x = 65,181,586,202.56/358,042.36
  6. Step 6: Final answer
    x = 182,049.93

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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.