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Finding the Fourth Proportional to 316,359.78, 436,576.53 and 173,119.85

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Solution

The fourth proportional to 316,359.78, 436,576.53 and 173,119.85 is: 238,905.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,359.78 : 436,576.53 = 173,119.85 : x
  2. Step 2: Convert to fraction form
    316,359.78/436,576.53 = 173,119.85/x
  3. Step 3: Cross multiply
    316,359.78x = 436,576.53 × 173,119.85
  4. Step 4: Simplify right side
    316,359.78x = 75,580,063,387.12
  5. Step 5: Solve for x
    x = 75,580,063,387.12/316,359.78
  6. Step 6: Final answer
    x = 238,905.41

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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.