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Finding the Fourth Proportional to 453,639, 680,556.84 and 138,087.66

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Solution

The fourth proportional to 453,639, 680,556.84 and 138,087.66 is: 207,161.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,639 : 680,556.84 = 138,087.66 : x
  2. Step 2: Convert to fraction form
    453,639/680,556.84 = 138,087.66/x
  3. Step 3: Cross multiply
    453,639x = 680,556.84 × 138,087.66
  4. Step 4: Simplify right side
    453,639x = 93,976,501,532.59
  5. Step 5: Solve for x
    x = 93,976,501,532.59/453,639
  6. Step 6: Final answer
    x = 207,161.42

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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.