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Finding the Fourth Proportional to 453,637.96, 680,555.34 and 138,086.68

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Solution

The fourth proportional to 453,637.96, 680,555.34 and 138,086.68 is: 207,159.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,637.96 : 680,555.34 = 138,086.68 : x
  2. Step 2: Convert to fraction form
    453,637.96/680,555.34 = 138,086.68/x
  3. Step 3: Cross multiply
    453,637.96x = 680,555.34 × 138,086.68
  4. Step 4: Simplify right side
    453,637.96x = 93,975,627,456.87
  5. Step 5: Solve for x
    x = 93,975,627,456.87/453,637.96
  6. Step 6: Final answer
    x = 207,159.97

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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.