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Finding the Fourth Proportional to 358,879.80, 537,282.90 and 218,911.80

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Solution

The fourth proportional to 358,879.80, 537,282.90 and 218,911.80 is: 327,735.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,879.80 : 537,282.90 = 218,911.80 : x
  2. Step 2: Convert to fraction form
    358,879.80/537,282.90 = 218,911.80/x
  3. Step 3: Cross multiply
    358,879.80x = 537,282.90 × 218,911.80
  4. Step 4: Simplify right side
    358,879.80x = 117,617,566,748.22
  5. Step 5: Solve for x
    x = 117,617,566,748.22/358,879.80
  6. Step 6: Final answer
    x = 327,735.27

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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.