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Finding the Fourth Proportional to 315,402.33, 435,251.39 and 179,435.98

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Solution

The fourth proportional to 315,402.33, 435,251.39 and 179,435.98 is: 247,619.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,402.33 : 435,251.39 = 179,435.98 : x
  2. Step 2: Convert to fraction form
    315,402.33/435,251.39 = 179,435.98/x
  3. Step 3: Cross multiply
    315,402.33x = 435,251.39 × 179,435.98
  4. Step 4: Simplify right side
    315,402.33x = 78,099,759,071.47
  5. Step 5: Solve for x
    x = 78,099,759,071.47/315,402.33
  6. Step 6: Final answer
    x = 247,619.47

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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.