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Finding the Fourth Proportional to 315,456.77, 435,355.19 and 179,496.44

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Solution

The fourth proportional to 315,456.77, 435,355.19 and 179,496.44 is: 247,719.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,456.77 : 435,355.19 = 179,496.44 : x
  2. Step 2: Convert to fraction form
    315,456.77/435,355.19 = 179,496.44/x
  3. Step 3: Cross multiply
    315,456.77x = 435,355.19 × 179,496.44
  4. Step 4: Simplify right side
    315,456.77x = 78,144,705,843.04
  5. Step 5: Solve for x
    x = 78,144,705,843.04/315,456.77
  6. Step 6: Final answer
    x = 247,719.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.