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Finding the Fourth Proportional to 366,953.20, 550,429.80 and 209,489.20

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Solution

The fourth proportional to 366,953.20, 550,429.80 and 209,489.20 is: 314,233.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,953.20 : 550,429.80 = 209,489.20 : x
  2. Step 2: Convert to fraction form
    366,953.20/550,429.80 = 209,489.20/x
  3. Step 3: Cross multiply
    366,953.20x = 550,429.80 × 209,489.20
  4. Step 4: Simplify right side
    366,953.20x = 115,309,098,458.16
  5. Step 5: Solve for x
    x = 115,309,098,458.16/366,953.20
  6. Step 6: Final answer
    x = 314,233.80

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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.