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Finding the Fourth Proportional to 315,912.62, 435,959.30 and 179,959.16

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Solution

The fourth proportional to 315,912.62, 435,959.30 and 179,959.16 is: 248,343.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,912.62 : 435,959.30 = 179,959.16 : x
  2. Step 2: Convert to fraction form
    315,912.62/435,959.30 = 179,959.16/x
  3. Step 3: Cross multiply
    315,912.62x = 435,959.30 × 179,959.16
  4. Step 4: Simplify right side
    315,912.62x = 78,454,869,422.19
  5. Step 5: Solve for x
    x = 78,454,869,422.19/315,912.62
  6. Step 6: Final answer
    x = 248,343.57

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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.