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Finding the Fourth Proportional to 316,148.72, 436,324.96 and 207,344.48

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Solution

The fourth proportional to 316,148.72, 436,324.96 and 207,344.48 is: 286,161.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,148.72 : 436,324.96 = 207,344.48 : x
  2. Step 2: Convert to fraction form
    316,148.72/436,324.96 = 207,344.48/x
  3. Step 3: Cross multiply
    316,148.72x = 436,324.96 × 207,344.48
  4. Step 4: Simplify right side
    316,148.72x = 90,469,571,942.22
  5. Step 5: Solve for x
    x = 90,469,571,942.22/316,148.72
  6. Step 6: Final answer
    x = 286,161.44

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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.