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Finding the Fourth Proportional to 315,949.03, 435,978.81 and 179,972.30

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Solution

The fourth proportional to 315,949.03, 435,978.81 and 179,972.30 is: 248,344.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,949.03 : 435,978.81 = 179,972.30 : x
  2. Step 2: Convert to fraction form
    315,949.03/435,978.81 = 179,972.30/x
  3. Step 3: Cross multiply
    315,949.03x = 435,978.81 × 179,972.30
  4. Step 4: Simplify right side
    315,949.03x = 78,464,110,276.91
  5. Step 5: Solve for x
    x = 78,464,110,276.91/315,949.03
  6. Step 6: Final answer
    x = 248,344.21

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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.