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Finding the Fourth Proportional to 320,043.69, 480,134.73 and 170,262.21

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Solution

The fourth proportional to 320,043.69, 480,134.73 and 170,262.21 is: 255,430.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,043.69 : 480,134.73 = 170,262.21 : x
  2. Step 2: Convert to fraction form
    320,043.69/480,134.73 = 170,262.21/x
  3. Step 3: Cross multiply
    320,043.69x = 480,134.73 × 170,262.21
  4. Step 4: Simplify right side
    320,043.69x = 81,748,797,788.56
  5. Step 5: Solve for x
    x = 81,748,797,788.56/320,043.69
  6. Step 6: Final answer
    x = 255,430.12

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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.