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Finding the Fourth Proportional to 453,609.72, 680,513.13 and 138,058.43

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Solution

The fourth proportional to 453,609.72, 680,513.13 and 138,058.43 is: 207,117.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,609.72 : 680,513.13 = 138,058.43 : x
  2. Step 2: Convert to fraction form
    453,609.72/680,513.13 = 138,058.43/x
  3. Step 3: Cross multiply
    453,609.72x = 680,513.13 × 138,058.43
  4. Step 4: Simplify right side
    453,609.72x = 93,950,570,919.62
  5. Step 5: Solve for x
    x = 93,950,570,919.62/453,609.72
  6. Step 6: Final answer
    x = 207,117.63

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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.