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Finding the Fourth Proportional to 316,375.88, 436,144.64 and 225,574.34

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Solution

The fourth proportional to 316,375.88, 436,144.64 and 225,574.34 is: 310,968.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,375.88 : 436,144.64 = 225,574.34 : x
  2. Step 2: Convert to fraction form
    316,375.88/436,144.64 = 225,574.34/x
  3. Step 3: Cross multiply
    316,375.88x = 436,144.64 × 225,574.34
  4. Step 4: Simplify right side
    316,375.88x = 98,383,039,312.54
  5. Step 5: Solve for x
    x = 98,383,039,312.54/316,375.88
  6. Step 6: Final answer
    x = 310,968.84

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1.5x scale

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.