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Finding the Fourth Proportional to 316,674.38, 436,994.42 and 173,431.35

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Solution

The fourth proportional to 316,674.38, 436,994.42 and 173,431.35 is: 239,326.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,674.38 : 436,994.42 = 173,431.35 : x
  2. Step 2: Convert to fraction form
    316,674.38/436,994.42 = 173,431.35/x
  3. Step 3: Cross multiply
    316,674.38x = 436,994.42 × 173,431.35
  4. Step 4: Simplify right side
    316,674.38x = 75,788,531,335.91
  5. Step 5: Solve for x
    x = 75,788,531,335.91/316,674.38
  6. Step 6: Final answer
    x = 239,326.37

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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.