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Finding the Fourth Proportional to 453,040.05, 681,036.30 and 320,835.90

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Solution

The fourth proportional to 453,040.05, 681,036.30 and 320,835.90 is: 482,299.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,040.05 : 681,036.30 = 320,835.90 : x
  2. Step 2: Convert to fraction form
    453,040.05/681,036.30 = 320,835.90/x
  3. Step 3: Cross multiply
    453,040.05x = 681,036.30 × 320,835.90
  4. Step 4: Simplify right side
    453,040.05x = 218,500,894,243.17
  5. Step 5: Solve for x
    x = 218,500,894,243.17/453,040.05
  6. Step 6: Final answer
    x = 482,299.29

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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.