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Finding the Fourth Proportional to 354,474, 531,412.92 and 144,262.80

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Solution

The fourth proportional to 354,474, 531,412.92 and 144,262.80 is: 216,272.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,474 : 531,412.92 = 144,262.80 : x
  2. Step 2: Convert to fraction form
    354,474/531,412.92 = 144,262.80/x
  3. Step 3: Cross multiply
    354,474x = 531,412.92 × 144,262.80
  4. Step 4: Simplify right side
    354,474x = 76,663,115,795.38
  5. Step 5: Solve for x
    x = 76,663,115,795.38/354,474
  6. Step 6: Final answer
    x = 216,272.89

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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.