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Finding the Fourth Proportional to 315,639.82, 435,605.19 and 179,673.83

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Solution

The fourth proportional to 315,639.82, 435,605.19 and 179,673.83 is: 247,962.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,639.82 : 435,605.19 = 179,673.83 : x
  2. Step 2: Convert to fraction form
    315,639.82/435,605.19 = 179,673.83/x
  3. Step 3: Cross multiply
    315,639.82x = 435,605.19 × 179,673.83
  4. Step 4: Simplify right side
    315,639.82x = 78,266,850,677.15
  5. Step 5: Solve for x
    x = 78,266,850,677.15/315,639.82
  6. Step 6: Final answer
    x = 247,962.54

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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.