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Finding the Fourth Proportional to 353,299.86, 529,950.15 and 142,939.62

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Solution

The fourth proportional to 353,299.86, 529,950.15 and 142,939.62 is: 214,409.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,299.86 : 529,950.15 = 142,939.62 : x
  2. Step 2: Convert to fraction form
    353,299.86/529,950.15 = 142,939.62/x
  3. Step 3: Cross multiply
    353,299.86x = 529,950.15 × 142,939.62
  4. Step 4: Simplify right side
    353,299.86x = 75,750,873,059.94
  5. Step 5: Solve for x
    x = 75,750,873,059.94/353,299.86
  6. Step 6: Final answer
    x = 214,409.58

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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.