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Finding the Fourth Proportional to 316,175.59, 436,325.70 and 172,932.56

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Solution

The fourth proportional to 316,175.59, 436,325.70 and 172,932.56 is: 238,648.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,175.59 : 436,325.70 = 172,932.56 : x
  2. Step 2: Convert to fraction form
    316,175.59/436,325.70 = 172,932.56/x
  3. Step 3: Cross multiply
    316,175.59x = 436,325.70 × 172,932.56
  4. Step 4: Simplify right side
    316,175.59x = 75,454,920,294.79
  5. Step 5: Solve for x
    x = 75,454,920,294.79/316,175.59
  6. Step 6: Final answer
    x = 238,648.78

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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.