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Finding the Fourth Proportional to 453,201.81, 679,190.34 and 172,565.97

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Solution

The fourth proportional to 453,201.81, 679,190.34 and 172,565.97 is: 258,615.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,201.81 : 679,190.34 = 172,565.97 : x
  2. Step 2: Convert to fraction form
    453,201.81/679,190.34 = 172,565.97/x
  3. Step 3: Cross multiply
    453,201.81x = 679,190.34 × 172,565.97
  4. Step 4: Simplify right side
    453,201.81x = 117,205,139,513.17
  5. Step 5: Solve for x
    x = 117,205,139,513.17/453,201.81
  6. Step 6: Final answer
    x = 258,615.78

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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.