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Finding the Fourth Proportional to 320,387.13, 480,581.91 and 300,900.96

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Solution

The fourth proportional to 320,387.13, 480,581.91 and 300,900.96 is: 451,352.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,387.13 : 480,581.91 = 300,900.96 : x
  2. Step 2: Convert to fraction form
    320,387.13/480,581.91 = 300,900.96/x
  3. Step 3: Cross multiply
    320,387.13x = 480,581.91 × 300,900.96
  4. Step 4: Simplify right side
    320,387.13x = 144,607,558,077.63
  5. Step 5: Solve for x
    x = 144,607,558,077.63/320,387.13
  6. Step 6: Final answer
    x = 451,352.58

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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.