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Finding the Fourth Proportional to 316,274.16, 436,724.31 and 225,907.32

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Solution

The fourth proportional to 316,274.16, 436,724.31 and 225,907.32 is: 311,942.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,274.16 : 436,724.31 = 225,907.32 : x
  2. Step 2: Convert to fraction form
    316,274.16/436,724.31 = 225,907.32/x
  3. Step 3: Cross multiply
    316,274.16x = 436,724.31 × 225,907.32
  4. Step 4: Simplify right side
    316,274.16x = 98,659,218,450.95
  5. Step 5: Solve for x
    x = 98,659,218,450.95/316,274.16
  6. Step 6: Final answer
    x = 311,942.08

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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.