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Finding the Fourth Proportional to 316,375.20, 436,597.80 and 173,135.32

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Solution

The fourth proportional to 316,375.20, 436,597.80 and 173,135.32 is: 238,926.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,375.20 : 436,597.80 = 173,135.32 : x
  2. Step 2: Convert to fraction form
    316,375.20/436,597.80 = 173,135.32/x
  3. Step 3: Cross multiply
    316,375.20x = 436,597.80 × 173,135.32
  4. Step 4: Simplify right side
    316,375.20x = 75,590,499,814.30
  5. Step 5: Solve for x
    x = 75,590,499,814.30/316,375.20
  6. Step 6: Final answer
    x = 238,926.75

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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.