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Finding the Fourth Proportional to 453,486.89, 680,331.48 and 137,968.40

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Solution

The fourth proportional to 453,486.89, 680,331.48 and 137,968.40 is: 206,983.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,486.89 : 680,331.48 = 137,968.40 : x
  2. Step 2: Convert to fraction form
    453,486.89/680,331.48 = 137,968.40/x
  3. Step 3: Cross multiply
    453,486.89x = 680,331.48 × 137,968.40
  4. Step 4: Simplify right side
    453,486.89x = 93,864,242,363.57
  5. Step 5: Solve for x
    x = 93,864,242,363.57/453,486.89
  6. Step 6: Final answer
    x = 206,983.37

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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.