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Finding the Fourth Proportional to 438,069.92, 657,105.52 and 105,645.92

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Solution

The fourth proportional to 438,069.92, 657,105.52 and 105,645.92 is: 158,469.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,069.92 : 657,105.52 = 105,645.92 : x
  2. Step 2: Convert to fraction form
    438,069.92/657,105.52 = 105,645.92/x
  3. Step 3: Cross multiply
    438,069.92x = 657,105.52 × 105,645.92
  4. Step 4: Simplify right side
    438,069.92x = 69,420,517,197.48
  5. Step 5: Solve for x
    x = 69,420,517,197.48/438,069.92
  6. Step 6: Final answer
    x = 158,469.03

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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.