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Finding the Fourth Proportional to 343,262.20, 515,238.90 and 165,911.80

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Solution

The fourth proportional to 343,262.20, 515,238.90 and 165,911.80 is: 249,034.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,262.20 : 515,238.90 = 165,911.80 : x
  2. Step 2: Convert to fraction form
    343,262.20/515,238.90 = 165,911.80/x
  3. Step 3: Cross multiply
    343,262.20x = 515,238.90 × 165,911.80
  4. Step 4: Simplify right side
    343,262.20x = 85,484,213,329.02
  5. Step 5: Solve for x
    x = 85,484,213,329.02/343,262.20
  6. Step 6: Final answer
    x = 249,034.74

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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.