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Finding the Fourth Proportional to 453,889.98, 680,791.23 and 138,349.62

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Solution

The fourth proportional to 453,889.98, 680,791.23 and 138,349.62 is: 207,511.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,889.98 : 680,791.23 = 138,349.62 : x
  2. Step 2: Convert to fraction form
    453,889.98/680,791.23 = 138,349.62/x
  3. Step 3: Cross multiply
    453,889.98x = 680,791.23 × 138,349.62
  4. Step 4: Simplify right side
    453,889.98x = 94,187,207,969.83
  5. Step 5: Solve for x
    x = 94,187,207,969.83/453,889.98
  6. Step 6: Final answer
    x = 207,511.10

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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.