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Finding the Fourth Proportional to 314,912.72, 434,578.32 and 171,672.32

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Solution

The fourth proportional to 314,912.72, 434,578.32 and 171,672.32 is: 236,907.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,912.72 : 434,578.32 = 171,672.32 : x
  2. Step 2: Convert to fraction form
    314,912.72/434,578.32 = 171,672.32/x
  3. Step 3: Cross multiply
    314,912.72x = 434,578.32 × 171,672.32
  4. Step 4: Simplify right side
    314,912.72x = 74,605,068,416.10
  5. Step 5: Solve for x
    x = 74,605,068,416.10/314,912.72
  6. Step 6: Final answer
    x = 236,907.13

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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.